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Transactions of Tianjin University 2024年第4期30卷 359-368页

作者： Zhaohui Meng Ying Liao Ling Liu Yaqian Li Hao Yan Xiang Feng Xiaobo Chen Yibin Liu Chaohe Yang sinopec dalian research institute of petroleum and petrochemicals co. LtdDalianChina State Key Laboratory of Heavy Oil Processing China University of PetroleumQingdao 266580China

Improving the efficiency of metal/reducible metal oxide interfacial sites for hydrogenation reactions of unsaturated groups(e.g.,C=C and C=O)is a promising yet challenging *** our study,we developed a Pd/CeO_(2) catalyst by enhancing the oxygen vacancy(O V)co.centration in CeO_(2) through high-temperature *** process led to the formation of an interface structure ideal for supporting the hydrogenation of methyl oleate to methyl *** cally,metal Pd^(0) atoms bonded to the O V in defective CeO_(2) formed Pd^(0)-O v-Ce^(3+)interfacial sites,enabling strong electron transfer from CeO_(2) to *** interfacial sites exhibit a synergistic adsorption eff ect on the reaction ***^(0) sites promote the adsorption and activation of C=C bonds,while O V preferably adsorbs C=O bonds,mitigating co.petition with C=C bonds for Pd^(0) adsorption *** synergy ensures rapid C=C bond activation and accelerates the attack of active H*species on the semi-hydrogenated *** a result,our Pd/CeO_(2)-500 catalyst,enriched with Pd^(0)-O v-Ce^(3+)interfacial sites,dem-onstrated excellent hydrogenation activity at just 30℃.The catalyst achieved a Cis-C18:1 co.version rate of 99.8% and a methyl stearate formation rate of 5.7 mol/(h·g metal).This work revealed the interfacial sites for enhanced hydrogenation reactions and provided ideas for designing highly active hydrogenation catalysts.

关键词： Hydrogenation Interfacial sites Oxygen vacancy C=C bond

Facile molybdenum and aluminum reco.ery from spent hydrogenation catalyst

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Chinese Journal of Chemical Engineering 2024年第5期69卷 72-78页

作者： Zhenhui Lv Jianan Li Dong Xue Tao Yang Gang Wang Chong Peng State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024China dalian research institute of petroleum and petrochemicals SINOPECDalian 116041China

Industrial catalyst waste has emerged as a hazardous pollutant that requires safe and proper disposal after the unloading *** a valuable and sustainable strategy for its treatment is a significant challenge co.pared to traditional *** this study,we present a facile method for the reco.ery of molybdenum and aluminum co.tents from spent Mo-Ni/Al_(2)O_(3) hydrogenation catalysts through crystallization separation and ***,the reco.ered molybdenum and aluminum are utilized as active metals and carriers for the preparation of new *** properties were thoroughly analyzed and investigated using various characterization *** hydrogenation activity of these newly prepared catalysts was evaluated on a fixed-bed small-scale device and co.pared with a reference catalyst synthesized from co.mercial raw ***,the hydrogenation activity of the catalysts was further assessed by using the entire distillate oil of co.l liquefaction as the raw oil,specifically focusing on denitrogenation and aromatic *** work not only offers an effective solution for recycling catalysts but also promotes sustainable development.

关键词： Waste treatment Alumina Hydrogenation Catalyst Crystallization Precipitation

Propane dehydro-aromatization reaction over PtFe@S-1 co.pling with Zn/ZSM-5 tandem catalysts: the role of Zn species

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Frontiers of Chemical Science and Engineering 2024年第8期18卷 25-35页

作者： Kai Bian Sirui Liu Huahua Fan Guanghui Zhang Xinwei Zhang Gideon Abaidoo Ocran Mingrui Wang Quanjie Liu Xiaowa Nie Shuandi Hou Xinwen Guo sinopec dalian research institute of petroleum and petrochemicals Dalian 116045China State Key Laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsPSU-DUT Joint Center for Energy ResearchSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China

Unraveling the structure-activity relationship and improving the catalytic performance is paramount in propane dehydro-aromatization reactions. Herein, a tandem catalyst with high propane dehydro-aromatization reaction performance was prepared via co.pling the PtFe@S-1 with Zn/ZSM-5 zeolites (PtFe@S-1&1.0Zn/ZSM-5), which exhibits high dehydrogenation activity, aromatics selectivity (~60% at ~78% propane co.version), and stability. The addition of zinc inhibits the cleavage of C_(6)^(=) intermediates on ZSM-5 and promotes the aromatization pathway by weakening zeolite acid strength, significantly improving the selectivity to aromatics. This understanding of the structure-activity relationship in propane dehydro-aromatization reaction helps develop future high-performance catalysts.

关键词： propane dehydro-aromatization reaction tandem catalysts the structure-activity relationship of zinc species

Morphology effect on catalytic performance of ebullated-bed residue hydrotreating over Ni-Mo/Al_(2)O_(3)catalyst:a kinetic modeling study

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Green Chemical Engineering 2024年第1期5卷 60-67页

作者： Zhe Liu Junco.g Yuan Zongzhuang Sun Xiang Feng Yibin Liu Huihong Zhu Chong Peng Chaohe Yang State Key Laboratory of Heavy Oil Processing China University of PetroleumQingdao266580China dalian research institute of petroleum and petrochemicals SINOPECDalian116045China State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian116024China

Upgrading of vacuum residue is of prime industrial significance due to the increasing demand for light *** the effect of catalyst morphology on vacuum residue hydrotreating performance by kinetic modeling is therefore of great ***,kinetic analysis of hydrodemetallization(HDM)and hydrodeco.radsoncarbon-residue(HDCCR)performances on industrial Ni-Mo/Al_(2)O_(3)catalysts with spherical and cylindrical morphologies in ebullated-bed were evaluated for more than 1600 *** was found that the percentage of light impurities easier to be removed on spherical catalysts were 78.20%and 39.43%in HDM and HDCCR reactions,respectively,higher than 65.20%and 17.50%on cylindrical *** suggests that catalyst morphology affects the impurity removal ability and the impurity properties,resulting in better hydrotreating performance of spherical *** work not only co.bines catalyst morphology with impurity removal capability through kinetic modeling,but also provides new insights into the design of efficient hydrotreating catalysts.

关键词： Morphology effect Kinetic analysis Vacuum residue Hydrotreating

Effect of bubble morphology and behavior on power co.sumption in non-Newtonian fluids’aeration process

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Chinese Journal of Chemical Engineering 2024年第1期65卷 243-254页

作者： Xiemin Liu Jing Wan Jinnan Sun Lin Zhang Feng Zhang Zhibing Zhang Xinyao Li Zheng Zhou Key Laboratory of Mesosco.ic Chemistry of Ministry of Education(MOE) School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China dalian research institute of petroleum and petrochemicals SINOPECDalian 116045China

Due to a prolonged operation time and low mass transfer efficiency, the primary challenge in the aeration process of non-Newtonian fluids is the high energy co.sumption, which is closely related to the form and rate of impeller, ventilation, rheological properties and bubble morphology in the reactor. In this perspective, through optimal co.putational fluid dynamics models and experiments, the relationship between power co.sumption, volumetric mass transfer rate(kLa) and initial bubble size(d0) was co.structed to establish an efficient operation mode for the aeration process of non-Newtonian fluids. It was found that reducing the d0co.ld significantly increase the oxygen mass transfer rate, resulting in an obvious decrease in the ventilation volume and impeller speed. When d0was regulated within 2-5 mm,an optimal kLa co.ld be achieved, and 21% of power co.sumption co.ld be saved, co.pared to the case of bubbles with a diameter of 10 mm.

关键词： Non-Newtonian fluids aeration process Power co.sumption Volumetric mass transfer rate Bubble size

Polycrystalline ZSM-5 Aggregates Induced by Seed and Catalytic Performance in Methanol to Hydrocarbon

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无机材料学报 2024年第8期39卷 945-954,I0010-I0013页

作者： WANG Xuchang JIAO Chuyu JI Zhuo JIAO Qirui QIN Bo DU Yanze ZHENG Jiajun LI Ruifeng Key Laboratory of co.l Science and Technology MOE Research Centre of Energy Chemical&Catalytic TechnologyTaiyuan University of TechnologyTaiyuan 030024China sinopec dalian research institute of petroleum and petrochemicals co. Ltd.SINOPECDalian 116045China

Synthesis of ZSM-5 zeolite typically utilizes small molecule polyamines or quaternary ammonium salts as organic structure guiding agent(OSDA).By co.trast,the OSDA-free hydrothermal synthesis system eliminates the use of organic templates and the subsequent calcination *** not only reduces the co.t of synthesis,but also prevents environmental pollution from the co.bustion of organic templates,representing an eco.friendly *** this,literature suggests that even so-called template-free synthesis systems often involve trace amount of organic substances like *** the present work,a calcined co.mercial ZSM-5 zeolite was served as seed,with sodium aluminate as aluminum source and silica sol as silico. source,ensuring an entirely template-free synthesis *** ZSM-5 aggregates co.sisted of rod-like nanocrystals were successfully prepared in the co.pletely OSDA-free *** of the Si/Al ratio in ZSM-5 seed,dosage and crystallization co.ditions such as crystallization temperature and crystallization time on ZSM-5 synthesis were *** results show that a highly crystallinity ZSM-5 aggregate co.sisting of primary nano-sized crystals less than 100 nm is produced from a gel precursor with 5.6%(in mass)seed after hydrothermal treatment for 48 ***,the Si/Al ratio in ZSM-5 seed has little effect on the topological structure and pore structure of the synthesized ***,the seeds with a low Si/Al ratio facilitate faster crystallization of zeolite and enhance the acidity,especially the strong acid centers,of the *** catalytic performance of the synthesized polycrystalline ZSM-5 was evaluated during dehydration of methanol and co.pared with a co.mercial reference *** results exhibit that as co.pared with the reference catalyst,the fabricated sample has a longer catalytic lifetime(16 h vs 8 h)attributed to its hierarchical pores derived from the loosely packed primary ***

关键词： ZSM-5 polycrystalline aggregate crystal seed structure guiding agent

Acetic acid-and furfural-based adaptive evolution of Saccharomyces cerevisiae strains for improving stress tolerance and lignocellulosic ethanol production

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Chinese Journal of Chemical Engineering 2024年第8期72卷 26-33页

作者： Omama Rehman Youduo Wu Quan Zhang Jin Guo Cuihuan Sun Huipeng Gao Yaqing Xu Rui Xu Ayesha Shahid Chuang Xue State Key Laboratory of Fine Chemicals Frontiers Science Centre for Smart Materials Oriented Chemical EngineeringEngineering Research Center of Application and Transformation for Synthetic BiologySchool of BioengineeringDalian University of TechnologyDalian 116024China Ningbo institute of dalian University of Technology Ningbo 315016China sinopec dalian research institute of petroleum and petrochemicals co. Ltd.Dalian 116041China Microbial research institute of Liaoning Province Chaoyang 122000China Yunnan Provincial Rural Energy Engineering Key Laboratory Kunming 650600China US-Pak Center for Advanced Studies in Agriculture and Food Security University of AgricultureFaisalabadPakistan

Acetic acid and furfural are known as prevalent inhibitors deriving from pretreatment during lignocellulosic ethanol *** negatively impact cell growth,gluco.e uptake and ethanol biosynthesis of Saccharomyces cerevisiae *** of industrial *** strains with high tolerance towards these inhibitors is thus critical for efficient lignocellulosic ethanol *** this study,the acetic acid or furfural tolerance of different *** strains co.ld be significantly enhanced after adaptive evolution via serial cultivation for 40 generations under stress *** acetic acid-based adaptive strain SPSC01-TA9 produced 30.5 g·L^(-1)ethanol with a yield of 0.46 g·g^(-1)in the presence of 9 g·L^(-1)acetic acid,while the acetic acid/furfural-based adaptive strain SPSC01-TAF94 produced more ethanol of 36.2 g·L^(-1)with increased yield up to 0.49 g·g^(-1)in the presence of both 9 g·L^(-1)acetic acid and 4 g·L^(-1)*** improvements were also observed during non-detoxified co.n stover hydrolysate culture by SPSC01-TAF94,which achieved ethanol production and yield of 29.1 g·L^(-1)and 0.49 g·g^(-1),respectively,the growth and fermentation efficiency of acetic acid/furfural-based adaptive strain in hydrolysate was 95%higher than those of wildtype strains,indicating the acetic acid-and furfural-based adaptive evolution strategy co.ld be an effective approach for improving lignocellulosic ethanol *** adapted strains developed in this study with enhanced tolerance against acetic acid and furfural co.ld be potentially co.tribute to eco.omically feasible and sustainable lignocellulosic biorefinery.

关键词： Saccharomyces cerevisiae Lignocellulosic ethanol production Adaptive evolution Acetic acid Furfural

A CRISPR/Cas9-based visual toolkit enabling multiplex integration at specific genomic loci in Aspergillus niger

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Synthetic and Systems Biotechnology 2024年第2期9卷 209-216页

作者： Yangyang Li Cen Li Yishan Fu Quan Zhang Jianing Ma Jingwen Zhou Jianghua Li Guocheng Du Song Liu National Engineering research Center for Cereal Fermentation and Food Biomanufacturing Jiangnan UniversityWuxi214122China Science Center for Future Foods Jiangnan UniversityWuxi214122China School of Biotechnology Jiangnan University1800 Lihu RoadWuxi214122China Jiangsu Provisional research Center for Bioactive Product Processing Technology Jiangnan University1800 Lihu RoadWuxiJiangsu214122China Key Laboratory of Plant Resource co.servation and Germplasm Innovation in Mountainous Region(Ministry of Education) College of Life Sciences/Institute of Agro-bioengineeringGuizhou UniversityGuiyang550025China dalian research institute of petroleum and petrochemicals SINOPECDalian116000China School of Chemical Engineering Dalian University of TechnologyDalian116000China

Aspergillus niger is a highly versatile fungal strain utilized in industrial *** expression levels of reco.binant genes in *** can be enhanced by increasing the co.y ***,given the prolonged gene editing cycle of ***,a“one-step”strategy facilitating the simultaneous integration of reco.binant genes into multiple genomic loci would provide a definitive *** our previous study,a visual multigene editing system(VMS)was designed to knock out five genes,employing a tRNA-sgRNA array that includes the pigment gene albA and the target *** upon this system,hybrid donor DNAs(dDNAs)were introduced to establish a clustered regularly interspaced short palindromic repeats(CRISPR)-based multiplex integration ***,a CRISPR-Cas9 homology-directed repair(CRISPR-HDR)system was co.structed in *** by co.transforming the CRISPR-Cas9 plasmid(with a highly efficient sgRNA)and the dDNA,resulting in precise integration of reco.binant xylanase gene xynA into the target loci(theβ-gluco.idase gene bgl,the amylase gene amyA,and the acid amylase gene ammA).Subsequently,the length of homology arms in the dDNA was optimized to achieve 100%editing efficiency at each of the three gene *** achieve efficient multiplex integration in ***,the CRISPR plasmid pLM2 carrying a sgRNA-tRNA array was employed for co.current double-strand breaks at multiple loci(bgl,amyA,ammA,and albA).Hybrid dDNAs were then employed for repair,including dDNA1-3(co.taining xynA expression cassettes without selection markers)and dDNAalbA(for albA knockout).Among the obtained white co.onies(RLM2′),23.5%exhibited co.current replacement of the bgl,amyA,and ammA genes with xynA(three co.ies).Notably,the xynA activity obtained by simultaneous insertion into three loci was 48.6%higher co.pared to that obtained by insertion into only the bgl ***,this multiple integration toolkit successfully enhanced the expression of endogenous pectinase pelA and

关键词： Multiplex integration Aspergillus niger CRISPR-Cas9 homologous direct repair White co.ony

Study of Macro-Mixing in a Microreactor

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China petroleum Processing & Petrochemical Technology 2023年第4期25卷 117-126页

作者： Cao Huili Tang Xiaojin Bao Di Hou Shuandi sinopec research institute of petroleum Processing co. Ltd.Beijing 100083 sinopec(dalian)research institute of petroleum and petrochemicals co. Ltd.Dalian 116045

The transfer rate between fluids in a microreactor is directly influenced by the mixing within the reactor, which subsequently impacts the reaction rate. This paper investigates the flow behavior and macro-mixing performance in a microreactor. First, the flow performance of the Ehrfeld Miprowa microreactor is studied. co.d experiments are co.ducted to examine fundamental flow laws and verify the accuracy of the chosen co.putational fluid dynamics simulation ***, macro-mixing performance in the microreactor, both with and without internal co.ponents, is investigated through both experiment and simulation. A bromocresol violet–NaOH–H2SO4 system is utilized in the macro-mixing experiments, which explore the effects of flow rate and internal co.ponents on macro-mixing. The Navier–Stokes equation is adopted as the co.putational model for macro-mixing simulations, which also co.sider the mass transfer and diffusion of tracer. The simulation results are in good agreement with the experimental results. Both experimental and simulation results demonstrate that the presence of internal co.ponents in the microreactor enhance its macro-mixing performance.

关键词： microreactor flow model macro-mixing

Study on Reaction Types and Environment in Different Regions of Diesel Deep Hydrodesulfurization Reactor

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China petroleum Processing & Petrochemical Technology 2021年第1期23卷 10-20页

作者： Dai Meng Li Shicai Li Yang Xu Dahai Ding He Chen Guang Guo Rong sinopec dalian research institute of petroleum and petrochemicals Dalian 116045

In this work,the influence of reaction co.ditions on hydrocarbon distribution and product quality was tested to obtain the rule of variation with different residence time.A semi-experience and semi-mechanism dynamics model was established and *** on the simulation results,the hydrogenation reactor is divided into five regions:the upper two regions are mainly saturated with most of tri-cyclic and bi-cyclic aromatics,and 90%of nitrides are co.verted,while all simple sulfide and some 4,6-DMDBT co.pounds undergo transformation *** the lower three regions,the reaction rate of HDS and HDN slows down,while the rate of monocyclic aromatic saturation *** HDS,HDN and HDA rates of the optimized catalyst grading scheme are significantly increased.

关键词： diesel HDS reactor reaction type kinetic model simulation