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Enhanced MTO performance over acid treated hierarchical SAPO-34

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Chinese Journal of Catalysis 2017年第1期38卷 123-130页

作者： Shu ren Guojuan Liu Xian Wu Xinqing Chen Minghong Wu Gaofeng Zeng Ziyu Liu Yuhan sun college of Science Shanghai University Shanghai 201900 China CAS Key Laboratory of Low‐Carbon Conversion Science and engineering Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China School of Environmental and chemical engineering Shanghai University Shanghai 201900 China

Hierarchical SAPO‐34 crystals were synthesized by a facile acid etching post‐treatment. Butterfly‐shaped porous patterns on four side faces and hierarchical pores composed of micropores,mesopores and macropores were formed after a nitric acid or oxalic acid treatment. The catalyticperformance of the hierarchical SAPO‐34 for the methanol to olefins (MTO) process showed that thesynergistic effect of the hierarchical pores and acid sites resulted in a longer catalyst lifetime (from2.0 to 390 min for the acid treated SAPO‐34) and higher selectivity to light olefins of 92.–94%.The ethylene selectivity can be adjusted between 37.4% and 51.5% by the pore size. No hierarchical SAPO‐34 was obtained after a treatment with butanedioic acid, and with this sample, fast deactivation was detected after 100 min.

关键词： Acid treatment Hierarchical pore SAPO‐34 Methanol to olefins Single‐run lifetime

SYNTHESIS AND PROPERTIES OF UV-CURABLE POLYSILOXANE METHACRYLATE OBTAINED BY ONE-STEP METHOD

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Chinese Journal of Polymer Science 2013年第2期31卷 363-370页

作者： Zhen Li Dong-sheng Tan Qi-lin ren 傅强 Yan-fen Xu Yun-feng Tao college of Polymer Science and engineering State Key Laboratory of Polymer Materials EngineeringSichuan University chengdu Taly Industrial chemical Co. Ltd of China

In this study, a UV-curable polysiloxane methacrylate （PSMA） was synthesized by a one-step method. The reaction was catalyzed by chloroplatinic acid between polymethylhydrosiloxane （PMHS） and hydroxyethyl methacrylate （HEMA）, as proved by FTIR and ^1H-NMR. The preliminary results indicate that the obtained UV-cured PSMA film has very good thermal stability, excellent transparency and satisfactory tensile strength. Our work provides a simple but efficient way to prepare UV-curable PSMA, which may find potential applications in UV-curing optical fiber, metal and glass coating and other fields.

关键词： Polysiloxane methacrylate UV-curing Synthesis.

CeO_(2. nanoparticles with oxygen vacancies decorated N-doped carbon nanorods:A highly efficient catalyst for nitrate electroreduction to ammonia

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Nano Research 2022年第10期15卷 8914-8921页

作者： Zerong Li Zhiqin Deng Ling Ouyang Xiaoya Fan Longcheng Zhang Shengjun sun Qian Liu Abdulmohsen Ali Alshehri Yonglan Luo Qingquan Kong Xuping sun chemical Synthesis and Pollution Control Key Laboratory of sichuan Province School of Chemistry and Chemical engineeringChina West Normal UniversityNanchong 637002China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Institute for Advanced Study Chengdu UniversityChengdu 610106China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia college of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China

Electrocatalytic nitrate reduction reaction(NO_(3)−RR)emerges as a highly efficient approach toward ammonia synthesis and degrading NO_(3)−*** our study,CeO_(2. nanoparticles with oxygen vacancies(VO)decorated N-doped carbon nanorods on graphite paper(CeO_(2.−x@NC/GP)were demonstrated as a highly efficient NO_(3)−RR *** CeO_(2.−x@NC/GP catalyst manifests a significant NH_(3 )yield up to 712.75μmol·h^(−1)·cm^(−2. at−0.8 V *** hydrogen electrode(RHE)and remarkable Faradaic efficiency of 92.93%at−0.5 V *** under alkaline conditions,with excellent ***,an assembled Zn-NO_(3)−battery with CeO_(2.−x@NC/GP as cathode accomplishes a high-power density of 3.44 mW·cm^(−2. and a large NH3 yield of 145.08μmol·h^(−1)·cm^(−2..Density functional theory results further expose the NO_(3)−reduction mechanism on CeO_(2.(111)surface with VO.

关键词： CeO_(2.−x nanoparticles oxygen vacancies electrochemical NO_(3)−reduction ammonia synthesis electrocatalysis

Nickel-carbonate nanowire array： An efficient and durable electrocatalyst for water oxidation under nearly neutral conditions

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Frontiers of chemical Science and engineering 2018年第3期12卷 467-472页

作者： Yuyao Ji Min Ma Xuqiang Ji Xiaoli Xiong Xuping sun college of Chemistry and Materials Science Sichuan Normal University Chengdu 610068 China college of Chemistry Sichuan University Chengdu 610064 China Key Lab of Process Analysis and Cont ol of sichuan Universities Yibin University Yibin 644000 China

It is highly attractive but still remains a great challenge to develop an efficient electrocatalyst for oxygen evolution reaction under nearly neutral conditions. In this work, we report the transformation of Ni3S2.nanowire array on nickel foam into the amorphous nickel carbonate nanowire array on nickel foam （NiCO3/NF）. The resulting NiCO3/NF shows high electrocatalytic activity towards water oxidation and affords current density of 50 mA. cm-2.at overpotential of 395 mV in 1.0 mol·L^-1 KHCO3. Moreover, this NiCO3/NF is also durable with a long-term electrochemical durability of 60 h. This catalyst electrode achieves a high turnover frequency of 0.2. mol O2.s^-1 at the overpotential of 500 mV.

关键词： water oxidation NiCO3/NF nearly neutral conditions superior activity electocatalyst

Synthesis of dispiro[indoline-3,1’-cyclobutane-2.,3’’-indolines] via visible light catalyzed cyclodimerization of 3-phenacylideneoxindoles

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Synthesis of dispiro[indoline-3,1’-cyclobutane-2’,3’’-in...

基于烷氧基侧链工程的聚电解质设计及离子异质结半导体纤维

中国化学会第十三届全国有机合成化学学术研讨会

作者： Yan-Hong Jiang ren-Yin Yang Jing sun Chao-Guo Yan college of Chemistry ＆ chemical {2. Yangzhou University

The spirooxindole core is a privileged heterocyclic ring system that is featured in a large number of bioactive naturally occurring alkaloids and medicinally relevant *** past few years have witnessed the explosive studies of the synthetic methodology for versatile spirooxindole systems,especially based on multicomponent reactions and catalytic asymmetric ***,there are still few reports about the construction of the corresponding dispirocyclobutane-3,3’-*** first example is the photocatalyzed addition of（E）-furylideneoxindoles in solid state resulted in head-to-tail cyclodimerized [indoline-3,1’-cyclobutane-3’,3’’-indoline].2. The second one is visible light catalyzed [2.2. cycloaddition reaction of（E）-ethyl 2.（2.oxoindolin-3-ylidene）acetates for synthesis of head-to-head cyclodimerized dispiro[indoline-3,1’-cyclobutane-2.,3’’-indolines].On the above basis,we developed a simple synthetic protocol for the efficient synthesis of novel functionalized dispiro[indoline-3,1’-cyclobutane-2.,3’’-indolines] in satisfactory yields and with high diastereoselectivity via the visible light catalyzed cyclodimerization reaction of 3-phenacylideneoxindoles in acetonitrile at room *** general,the reaction proceeded smoothly to give the dispirooxindoles in 80-96% *** substituents on the substractes showed little effect on the *** there are eight possible disatereoisomers for the obtained dispirooxindoles,the spectroscopy and single crystal structures indicated that the obtained dispirooxidnoles have this kind of relative trans-configuration.

关键词： spirooxindole dispirocyclobutane-3,3’-bisoxindole visible light cyclodimerization

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中国科学：化学 2024年第4期54卷 654-666页

作者：邢毅张靖灵樊纯宇吴琪琳孙恒达冯良文王刚朱美芳东华大学材料科学与工程学院东华大学纤维材料改性国家重点实验室上海201620 四川大学化学学院绿色化学与技术教育部重点实验室成都610064

一维离子-电子器件具有尺寸小、集成能力强的独特优势,但在环境温度下的低离子迁移率限制了其在生物集成电子领域的应用能力.本文通过侧链工程在传统咪唑基离子液体中引入烷氧基,并与聚乙二醇甲基丙烯酸酯(poly(ethylene glycol)methacr... 详细信息

一维离子-电子器件具有尺寸小、集成能力强的独特优势,但在环境温度下的低离子迁移率限制了其在生物集成电子领域的应用能力.本文通过侧链工程在传统咪唑基离子液体中引入烷氧基,并与聚乙二醇甲基丙烯酸酯(poly(ethylene glycol)methacrylate,PEGMA)共聚,合成了低玻璃化转变温度(glass-transition temperature,Tg)的聚阳离子电解质poly(VIM-m-TFSI),在室温下实现了更高的链迁移率,显示出更低的离子阻抗和更宽的电化学窗口(-2.7~+2.7 V).与聚阴离子电解质poly(AMPS-EMIM)简单贴合,构筑了高性能全柔性离子异质结,实现了整流比为12.的固态离子二极管.设计合成的两种聚电解质溶液表现出优异的溶液可加工性和流变性能,可直接用作3D打印油墨.最终,通过3D打印技术实现了离子异质结半导体纤维的一体化成型构筑,获得了基于5×5阵列单元的大面积半导体纤维纺织品,初步实现了输入信号的“0-1”整流,验证了离子异质结半导体纤维在织物逻辑电路领域的应用潜力.

关键词：聚离子液体侧链工程烷氧基 3D打印离子异质结半导体纤维

Manganese leaching in high concentration flue gas desulfurization process with semi-oxidized manganese ore

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Chinese Journal of chemical engineering 2020年第2期28卷 571-578页

作者： Dong sun Guangzhi Xin Lu Yao Lin Yang Xia Jiang Wenju Jiang college of Architecture and Environment Sichuan UniversityChengdu 610065China National engineering Research Center for Flue Gas Desulfurization Chengdu 610065China

Manganese leaching during high concentration flue gas desulfurization process with semi-oxidized manganese ore was studied in this *** was found that there were different reaction pathways among which MnO2.Mn2.3 and MnCO3 in semi-oxidized manganese ore during flue gas desulphurization and manganese *** SO2.concentration facilitated redox reaction between MnO2.and SO2.and high concentration of H2.O4 accelerated MnCO3/Mn2.3 leaching from semi-oxidized *** study showed that manganese leaching in flue gas desulfurization process with semi-oxidized ore was controlled by a mixed-control model,that is the surface chemical reaction and mass diffusion dominated both the oxidation of SO2.and manganese leaching *** apparent activation energy was 13.05 k J·mol-1 and the reaction orders with respect to SO2.and H2.O4 concentration were 1.38 and 0.10,***,a semi-empirical rate equation based on shrinking core model was derived to describe the process.

关键词： Semi-oxidized manganese ore Flue gas desulfurization Manganese leaching Kinetics study

Performance evaluation of a bubble generator and a bubble separator designed for the gas removal system of a small thorium molten salt reactor

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Chinese Journal of chemical engineering 2020年第5期28卷 1250-1259页

作者： Licheng sun Liang Zhao Min Du Zhengyu Mo Jiguo Tang Guo Xie State Key Laboratory of Hydraulics and Mountain River engineering College of Water Resource&HydropowerSichuan UniversityChengdu 610065China

In the present study, a bubble generator and a bubble separator were designed and evaluated for an independent off-gas removal system of a small thorium molten salt reactor(TMSR) with reference to the design of the Oak Ridge National Laboratory(ONRL). The bubble generator employed a Venturi tube as its main body owing to its simplicity and highly reliable structure. A centrifugal separator was used as the bubble separator, taking advantage of the kinetic energy of fluid to create a centrifugal force to separate gas bubbles from the mixture flow. Both the bubble generator and the separator were demonstrated to have good potential to meet the performance requirements of an off-gas removal system for a small TMSR. With water and air as the working fluids, for the final designs of the two key pieces of equipment, a liquid flow rate exceeding 15 m3·h-1 can essentially make their performance meet the requirements of the off-gas removal system in terms of the average size of the generated bubbles and gas separation efficiency.

关键词： Bubble generator Venturi Bubble separator Off-gas removal TMSR

Vanadium(V)reduction by using a by-product of the yellow phosphorus industry

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Chinese Journal of chemical engineering 2023年第10期62卷 150-158页

作者： Baibin Yang Shihong Chen Haowen ren Yang Qiu Chong Chen Yong Guo Chunhui Luo Qiang Zhao Wei Yang School of chemical engineering Sichuan UniversityChengdu 610065China State Key Laboratory of Hydraulics and Mountain River engineering College of Water Resource&HydropowerSichuan UniversityChengdu 610065China

Release of vanadium(V)from industry has threatened the environment and human *** this paper,a removal method of vanadium(V)is proposed using a by-product of the yellow phosphorus industry(phosphorus-iron)as a reducing *** thermodynamics analysis shows that the Gibbs free energy is always negative from 0 to 100℃,indicating a spontaneous *** of the phosphorus-iron slag/sulfuric acid dosage and temperature on the removal efficiency is comprehensively studied,and the kinetics parameters are calculated based on a quasi-first order reaction kinetics *** indicate that vanadium(V)can be entirely reduced by using phosphorus-iron slag,the frequency factor and apparent activation energy are 3.2.×10^(9)min^(-1)and 64.50 ***^(-1) for vanadium(V)*** on above results,a lab-scale reactor is constructed and achieves a removal efficiency of~100%and a treatment capacity of 2.0 ml vanadium(V)solution(2.g.L^(-1))within 3 *** work demonstrates the feasibility of vanadium(V)reduction using phosphorus-iron slag as a reducing agent in applications.

关键词： Vanadium Phosphorus-iron slag Thermodynamics Kinetics Reduction