检索结果-南通市图书馆

apparent kinetics of 1-Decene Polymerization Catalyzed Using the Ionic Liquid[Bmim]_(x)[C_(2)H_(5)NH_(3)]_(1-x)[Al_(2)Cl_(7)]

在线全文

学校读者我要写书评

暂无评论

引用

China Petroleum Processing & Petrochemical Technology 2023年第4期25卷 16-22页

作者： Chen Yingze He Jinxue Wang Ben Pan Shiguang Zhang Di Bai Zhongxiang An Liangcheng Liu Dan Ma Aijing Li Hu Gui Jianzhou State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process Engineeringand School of Chemical Engineering and TechnologyTiangong UniversityTianjin 300387China School of Material Science and Engineering Tiangong UniversityTianjin 300387China Ningxia Coal Industry Co.Ltd. CHN ENERGYYinchuan 750011China School of Chemistry Tiangong UniversityTianjin 300387China

Poly-α-olefin(PAO)synthetic oil,a regular long-chain alkane produced from the catalytic polymerization ofα-olefin,is a high-quality lubricating base oil with huge market *** this study,PAO synthesis based on the catalytic polymerization of 1-decene using the ionic liquid(IL)[Bmim]_(x)[C_(2)H_(5)NH_(3)]_(1-x)[Al_(2)Cl_(7)]as the catalyst was *** with the conventional catalyst[Bmim][Al_(2)Cl_(7)],the obtained PAO product incorporates more trimers and tetramers of 1-decene and contains few double-bond end groups,demonstrating a better catalytic system for PAO-10 *** apparent polymerization kinetics of 1-decene in this catalytic system were studied based on the 1-decene concentration,catalyst concentration,and reaction *** apparent kinetic equation for PAO formation was determined,providing a promising strategy for PAO production using 1-decene polymerization.

关键词： poly-α-olefin 1-decene ionic liquid apparent kinetics catalytic polymerization

Production of glycerol carbonate using crude glycerol from biodiesel production with DBU as a catalyst

在线全文

学校读者我要写书评

暂无评论

引用

Chinese Journal of Chemical Engineering 2018年第9期26卷 1912-1919页

作者： Ying Qing Houfang Lu Yingying Liu Changjun Liu Bin Liang Wei Jiang School of Chemical Engineering Sichuan University Institute of New Energy and Low Carbon Technology Sichuan University

The biodiesel production technology catalyzed by 1,8-diazabicycloundec-7-ene（DBU）is developed in this *** glycerol containing DBU and DBU/glycerol/CO2（DGC）ionic compounds reacts directly with dimethyl carbonate（DMC）to produce high value-added glycerol carbonate（GC）catalyzed by DBU and *** catalytic performance of DBU and DGC,as well as the kinetics of the reaction catalyzed by DBU,were *** results show that DGC has a weak catalytic effect on the transesterification of glycerol and *** the temperature is higher than 60℃,DGC catalyzes the reaction jointly with DBU,which is produced from the decomposition of *** has a good catalytic effect on the reaction between glycerol and DMC,with 90%conversion of glycerol and 84%selectivity to GC under the following conditions：DMC-to-glycerol molar ratio of 3：1,4.0%DBU（based on glycerol mass）,reaction time of 60 min,and reaction temperature of 40℃.The apparent kinetics results show that the activation energies are 30.95 kJ·mol^-1 and 55.16 kJ·mol^-1 for the forward and reverse GC generation reactions,respectively,and the activation energy of the decomposition reaction of GC to glycidol（GD）is 26.58 kJ·mol^-1.

关键词： Glycerol DBU Glycerol carbonate apparent kinetics

Preparation of Conjugated Linoleic Acid of High Purity and Its apparent Kinetic Characteristics During Formation

在线全文

学校读者我要写书评

暂无评论

引用

Transactions of Tianjin University 2002年第1期8卷 27-32页

作者：唐向阳郭诤张根旺天津大学理学院天津300072 天津大学化工学院天津300072 郑州工程学院食品工程系郑州450052

Conjugated linoleic acid (CLA) is a fatty acid with physiological activities and potential application prospect. This paper focuses on the method of synthesis of conjugated linoleic acid of high purity and the process line and conditions for its purification that can be used in large scale production. CLA of more than 95% purity was prepared by means of urea adduct purification and conjugation using safflower oil as material. The total recovery of the product adds up to more than 48%. The reactive kinetics about linoleic acid from sunflower oil converted into CLA was investigated, and its apparent kinetic model was also established, which can be used as a base for industrial designs.

关键词： linoleic acid conjugated linoleic acid preparation apparent kinetics urea adduct alkali catalyzed conjugation safflower oil