检索结果-南通市图书馆

Alcohol-assisted Hydrodeoxygenation as a sustainable and cost-effective pathway for biomass derivatives upgrading

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第10期31卷 133-159,I0004页

作者： Hao Xu Hao Li National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization Tianjin Key Laboratory of Chemical Process SafetySchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin 300130China

Hydrodeoxygenation(HDO)is one of the most promising strategies for the upgrading of biomass-derived compounds to chemicals and fuels.However,the conventional HDO process accompanied by insecure high-pressure H_(2)leads to the hefty infrastructure cost on the industrial scale and inevitably trigger overall hydrogenation which is considered as an uncontrollable and risky approach.Accordingly,the developments of alcohol-assisted HDO can be viewed as a sustainable and cost-effective alternative.This review critically summarizes the potentials and challenges of alcohol-assisted strategy from diverse perspectives including safety,economics and catalytic efficiency.Based on the discrepancies of in-situ hydrogen generation,the alcohol-assisted strategy is divided into combined reforming-HDO route and catalytic transfer hydrogenation/hydrogenolysis(CTH)route.Furthermore,describe different catalytic behaviors and elaborate their applications among several upgrading processes of representative biomass model compounds,aiming to illustrate their potentials in biomass utilization.The influence of alcohols is highlighted because they act both hydrogen donor and solvent.At last,the current challenges and perspectives of alcohol-assisted HDO are proposed for further development and improvement.

关键词： Alcohol-assisted Hydrodeoxygenation Biomass Hydrogen donor Solvent

Rational design of Ni-MoO_(3–x) catalyst towards efficient Hydrodeoxygenation of lignin-derived bio-oil into naphthenes

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第9期84卷 122-130页

作者： Chao Wang Luxian Guo Kui Wu Xinxin Li Yanping Huang Zhigang Shen Hongyun Yang Yunquan Yang Weiyan Wang Changzhi Li School of Chemical Engineering Xiangtan UniversityXiangtan 411105HunanChina CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Received 30 Nove

Design of a robust catalyst with high activity but the low cost for the Hydrodeoxygenation(HDO) of biooils is of great importance to bring the biorefinery concept into reality.In this study,density functional theory(DFT) calculation was adopted to analyze the optimal location of Ni on MoO_(3-x) containing oxygen vacancy,and the corresponding result demonstrated that metallic Ni cluster located at the neighborhood of oxygen vacancies would significantly evoke HDO activity.Enlightened by DFT results,NiMoO_(4) was first hydrothermally synthesized and then employed to fabricate Ni-MoO_(3-x) catalyst via a low-temperature reduction,where Ni escaped from NiMoO_(4) and was reduced to its metallic state.Such an evolution of Ni species also induced the formation of oxygen vacancies around metallic Ni cluster.In the HDO of p-cresol,Ni-MoO_(3-x) exhibited high activity with a complete conversion and a methylcyclohexane selectivity of 99.4% at 150℃.Moreover,the catalyst showed good versatility in catalyzing HDO of diverse lignin-derived oxygenates and lignin oil.2D HSQC NMR,gas chromatograph and elemental analysis of the lignin oil demonstrated the high deoxygenation efficiency and saturation of the benzene ring over Ni-MoO_(3-x).In the upgrading of crude lignin oil,the deoxygenation degree was up to 99%,and the overall carbon yield of the naphthenes was as high as 69.4%.Importantly,the structures and carbon numbers of the naphthene products are similar to jet fuel-range cycloalka nes,which are expected to have a high density that can be blended into jet fuel to raise the range(or payload) of airplanes.This work demonstrates the feasibility for improving the targeted catalytic reactivity by rational tailoring the catalyst structure under the guidance of theoretical analysis,and provides an energy-efficient route for the upgrading of lignin crude oil into valuable naphthenes.

关键词： Ni-MoO_(3–x)catalyst Hydrodeoxygenation Lignin-derived bio-oil Metal-vacancy interface Naphthene Renewable energy

Enhanced Hydrodeoxygenation of lignin-derived anisole to arenes catalyzed by Mn-doped Cu/Al_(2)O_(3)

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2023年第3期8卷 927-937页

作者： Xiaofei Wang Shixiang Feng Yue Wang Yujun Zhao Shouying Huang Shengping Wang Xinbin Ma Key Laboratory for Green Chemical Technology of Ministry of Education Collaborative Innovation Centre of Chemical Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou350207China

Lignin is a renewable carbon resource to produce arenes due to its abundant aromatic structures.For the liquid-phase Hydrodeoxygenation(HDO)based on metallic catalysts,the preservation of aromatic rings in lignin or its derivatives remains a challenge.Herein,we synthesized Mndoped Cu/Al_(2)O_(3) catalysts from layered double hydroxides(LDHs)for liquid-phase HDO of lignin-derived anisole.Mn doping significantly enhanced the selective deoxygenation of anisole to arenes and inhibited the saturated hydrogenation on Cu/Al_(2)O_(3).With Mn doping increasing,the surface of Cu particles was modified with MnO_(x) along with enhanced generation of oxygen vacancies(Ov).The evolution of active sites structure led to a controllable adsorption geometry of anisole,which was beneficial for increasing arenes selectivity.As a result,the arenes selectivity obtained on 4Cu/8Mn4AlO_(x) was increased to be more than 6 folds of that value on 4Cu/4Al_(2)O_(3) over the synergistic sites between metal Cu and Ov generated on MnO_(x).

关键词： Anisole Hydrodeoxygenation Oxygen vacancy Arenes Metal oxide

Supported Pt-Ni bimetallic nanoparticles catalyzed Hydrodeoxygenation of dibenzofuran with high selectivity to bicyclohexane

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第1期33卷 234-238页

作者： Pengyu Wu Chun Cai Chemical Engineering College Nanjing University of Science and TechnologyNanjing 210094China

Catalytic Hydrodeoxygenation(HDO)is one of the most effective methods to upgrade the oxygen-containing compounds derived from coal tar to valuable hydrocarbons.Herein,an efficient bimetallic catalyst Pt_(1)Ni_(4)/MgO was prepared and applied in the HDO of dibenzofuran(DBF).High yield(95%)of the desired product bicyclohexane(BCH)was achieved at 240℃and 1.2 MPa of H_(2).Superior catalytic performance could be ascribed to the"relay catalysis"of Pt sites and Ni sites,and the reaction pathway is proposed as well.Scale-up experiment and recyclability test were also performed,which demonstrated the recyclability and promising potential application of Pt_(1)Ni_(4)/MgO.

关键词： Hydrodeoxygenation Dibenzofuran Bicyclohexane Bimetallic catalyst Relay catalysis

Synergistic interaction of metal–acid sites for phenol Hydrodeoxygenation over bifunctional Ag/TiO_2 nanocatalyst

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2019年第2期27卷 349-361页

作者： Andrew Ng Kay Lup Faisal Abnisa Wan Mohd Ashri Wan Daud Mohamed Kheireddine Aroua Department of Chemical Engineering Faculty of Engineering University of Malaya Centre for Carbon Dioxide Capture and Utilization School of Science and Technology Sunway University Department of Engineering Lancaster University

The use of silver metal for Hydrodeoxygenation(HDO) applications is scarce and different studies have indicated of its varying HDO activity. Several computational studies have reported of silver having almost zero turnover frequency for HDO owing to its high C\\O bond breaking energy barrier and low carbon and oxygen binding energies.Herein this work, titania supported silver catalysts were synthesized and firstly used to examine its phenol HDO activity via experimental reaction runs. BET, XRD, FESEM, TEM, EDX, ICP–OES, Pyridine-FTIR, NH_3-TPD and H_2-TPD analyses were done to investigate its physicochemical properties. Phenomena of hydrogen spillover and metal–acid site synergy were examined in this study. With the aid of TiO_2 reducible support, hydrogen spillover and metal–acid site interactions were observed to a certain extent but were not as superior as other Pt, Pd, Ni-based catalysts used in other HDO studies. The experimental findings showed that Ag/TiO_2 catalyst has mediocre phenol conversion but high benzene selectivity which confirms the explanation from other computational studies.

关键词： Silver based catalyst Physicochemical properties Hydrogen spillover Metal-acid sites Hydrodeoxygenation

Preparation of Ni2P/Al-SBA-15 catalyst and its performance for benzofuran Hydrodeoxygenation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2017年第12期25卷 1784-1790页

作者： Tianhan Zhu Hua Song Xueya Dai Hualin Song Provincial Key Laboratory of Oil & Gas Chemical Technology College of Chemistry & Chemical Engineering Northeast Petroleum University Daqing 163318 China Key Laboratory of Cancer Prevention and Treatment of Heilongjiang Province Mudanjiang Medical University Mudanjiang 157011 China

The Al-doped Ni_2P/Al-SBA-15 catalyst with high Hydrodeoxygenation(HDO) activity was synthesized by temperature programmed reduction at a relatively low reduction temperature of 400 °C. The as-prepared catalyst was characterized by X-ray diffraction(XRD), H_2 temperature-programmed reduction(H_2-TPR), X-ray photoelectron spectroscopy(XPS), transmission electron microscope(TEM), NH3 temperature programmed desorption(NH_3-TPD), N_2 adsorption–desorption and CO uptake. The effect of Al on benzofuran(BF) HDO performance was investigated. The result indicates that the incorporation of Al into the SBA-15 support can promote the formation of much uniform, smaller, highly dispersed Ni_2 P particles on the catalyst. The Al also contributes to suppress the enrichment of P and promote more exposed Ni sites on the surface. In addition, the incorporation of Al can enhance the acid strength. The total deoxygenated product yield over Ni_2P/Al-SBA-15 reached 90.3%, which is an increase of 19.4%, when compared with that found for Ni_2P/SBA-15(70.9%).

关键词： Ni 2 P SBA-15 Hydrodeoxygenation Benzofuran 艾尔

Regulating electronic environment on alkali metal-doped Cu@NS-SiO_(2) for selective anisole Hydrodeoxygenation

在线全文

学校读者我要写书评

暂无评论

绿色化学工程(英文) 2023年第3期4卷 294-302页

作者： Xiaofei Wang Xiaoxue Han Li Kang Shixiang Feng Meiyan Wang Yue Wang Shouying Huang Yujun Zhao Shengping Wang Xinbin Ma Key Laboratory for Green Chemical Technology of Ministry of Education Collaborative Innovation Centre of Chemical Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou350207China Haihe Laboratory of Sustainable Chemical Transformations Tianjin300192China

Lignin utilization is a potential approach for replacing fossil energy and releasing the environment pressure.Herein,we synthesized a series of novel Cu-based catalysts,Cu@NS-SiO_(2)(NS=nano sphere)and alkali metals(Na,K,Rb,and Cs)doped Cu@NS-SiO_(2),and applied them in Hydrodeoxygenation reaction of anisole.High Cu dispersion was presented on all catalysts.The modification of alkali metals on Cu@NS-SiO_(2) significantly enhanced the electron density of Cu sites in the following order:Cs>Rb>K>Na,among which Cs decreased the Cu_(2)p_(3)/2 binding energy most(by 0.7 eV).Moreover,the modification did not substantially affect the geometric structure of Cu species.This regulable electronic environment of Cu sites was crucial for selective deoxygenation and inhibiting the hydrogenation of aromatic rings in anisole,and thus promoted the selectivity of benzene.Compared with Cu@NS-SiO_(2)(~59%),the highest benzene selectivity was obtained on Cs/10Cu@NS-SiO_(2) at~83%.

关键词： Anisole Hydrodeoxygenation Arenes Alkali metal Electronic effect

MgFe hydrotalcites-derived layered structure iron molybdenum sulfide catalysts for eugenol Hydrodeoxygenation to produce phenolic chemicals

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2018年第2期27卷 600-610页

作者： Xinyong Diao Na Ji Mingyuan Zheng Qingling Liu Chunfeng Song Yibo Huang Qing Zhang Alazar Alemayehu Luoyun Zhang Changhai Liang Laboratory of Advanced Materials and Catalytic Engineering Dalian University of Technology School of Environmental Science and Engineering Key Laboratory of Biomass-Derived Gas and Oil for Chinese Petrochemical IndustryTianjin University Dalian Institute of Chemical Physics Chinese Academy of Sciences

Hydrodeoxygenation（HDO） is an effective alternative to produce value-added chemicals and liquid fuels by removing oxygen from lignin-derived compounds. Sulfide catalysts have been proved to have good activity for the HDO and particularly high selectivity to phenolic products. Herein, we presented a novel way to prepare the layered structure sulfide catalysts（MgFeMo-S） derived from MgFe hydrotalcites via the intercalation of Mo in consideration of the memory effect of the calcined hydrotalcite. By varying the Mg/Fe mole ratio, a series of MgFeMo-S catalysts were successfully prepared and characterized by nitrogen adsorption/desorption isotherms, X-ray diffraction（XRD）, transmission electron microscopy（TEM）,and inductively coupled plasma optical emission spectrometer（ICP-OES）. The characterization results indicated that the MgFeMo-S catalyst has retained the unique layered structure, which can facilitate uniform dispersion of the MoS2 species on both the surface and interlayer of the catalysts. For the HDO of eugenol, the Mg1Fe2Mo-S catalysts exhibited the best HDO activity among all the catalysts due to its higher active metal contents and larger pore size. The HDO conversion was 99.6% and the yield of phenolics was 63.7%, under 5 MPa initial H2 pressure（measured at RT） at 300 ℃ for 3 h. More importantly,MoS2 species deposited on the interlayer galleries in the MgFeMo-S catalysts resulted in dramatically superior HDO activity to MoS2/Mg1Fe2-S catalyst. Based on the mechanism investigation for eugenol, the HDO reaction route of eugenol under sulfide catalytic system has been proposed for the first time. Further applicability of the catalyst on HDO of more lignin-derived compounds was operated, which showed good HDO activity and selectivity to produce aromatic products.

关键词： MgFe Hydrotalcite Sulfide catalysts Layered structure Hydrodeoxygenation Eugenol

Effect of a second metal(Co,Fe, Mo and W) on performance of Ni_2P/SiO_2 for Hydrodeoxygenation of methyl laurate

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2016年第3期25卷 418-426页

作者： Zhengyi Pan Rijie Wang Ziyang Nie Jixiang Chen Tianjin Key Laboratory of Applied Catalysis Science and Technology Department of Catalysis Science and Engineering School of Chemical Engineering and Technology Tianjin University

NiP/SiOand bimetallic Ni MP/Si O2(M = Co, Fe, Mo, W; Ni/M atomic ratio=5) catalysts were prepared by the temperature-programmed reduction method. The catalysts and their precursors were characterized by means of UV–Vis DRS, H-TPR, XRD, TEM, CO chemisorption and NH-TPD. Their performance for the deoxygenation of methyl laurate was tested on a fixed-bed reactor. The results show that the main phase was NiP in all catalysts, and M(M = Co, Fe, Mo, W) entered the lattice of NiP forming solid solution. Different from Fe and Co, the introduction of Mo and W into NiP/SiOreduced the phosphide particle size and increased the acid amount. In the deoxygenation reaction, the turnover frequency of methyl laurate increased on the catalysts in the order of NiMoP/SiO, NiP/SiO, Ni WP/Si O2, NiFeP/SiOand NiCoP/SiO, which is influenced by the size of phosphide particles and the interaction between Ni and M(M = Fe, Co, Mo or W). The introduction of the second metal(especially Mo and W) into NiP/SiOpromoted the Hydrodeoxygenation pathway. This is mainly attributed to the interaction between Ni and the second metal. Finally, the Ni MoP/SiOcatalyst was tested at 340 oC, 3 MPa, methyl laurate WHSV of 14 h-1and H/methyl laurate molar ratio of 25 for 132 h, and its deactivation took place. We found that the catalyst deactivation mainly resulted from carbonaceous deposit rather than the sintering of metal phosphide crystallites.

关键词： Bimetallic phosphide Solid solution Methyl laurate Hydrodeoxygenation Decarbonylation