Journal of Yunnan University (Natural Science Edition), E-mail of editorial department, 0 1 issue, 2006.
Author Liu Xiangyi, Yang,
Institution Southwest Forestry College, Kunming, Yunnan Kunming University of Science and Technology School of Environmental Science and Engineering
Octadecyl acrylate; Solid superacid; esterify
Acrylic acid; Octadecyl alcohol; Octadecylacrylic acid; Solid superacid; Melt esterification
Octadecyl acrylate was prepared by direct esterification of acrylic acid and octadecyl alcohol with solid superacid SO4-/TiO 2 as catalyst. The effects of molar ratio of acrylic acid to octadecyl alcohol, mass fraction of catalyst and polymerization inhibitor, reaction temperature and reaction time on the reaction were studied. The product was characterized by infrared spectrum. The optimum synthesis conditions were as follows: the molar ratio of acrylic acid to octadecyl alcohol was 1.2∶ 1, the mass fractions of solid superacid and hydroquinone were 6% and 0.8% respectively, the reaction temperature was 120℃ and the reaction time was 3 h. Under these conditions, the yield of ester can reach 97%.
2. Synthesis of ethyl linoleate catalyzed by solid superacid.
Title: Fine Chemical Industry, E-mail of Editorial Department, 0 1, 2005.
Author Liu Yifu He Ma Zheng Milin
Setting: School of Chemical Engineering and Materials, Heilongjiang University Harbin 150080 Harbin Institute of Chemical Technology, Heilongjiang Harbin Institute of Chemical Engineering.
Esterification of solid superacid linoleic acid with ethyl linoleate
Solid superacid; Linolenic acid; Ethyl linoleate; esterify
SO _ 2-4/TiO _ 2 solid superacid catalyst was prepared by two-phase titration precipitation method, and the catalyst preparation conditions suitable for linoleic acid esterification reaction were obtained: sulfuric acid impregnation concentration of 0.75 mol/L, impregnation time of 4h, calcination temperature of 450℃ and calcination time of 4 h. The catalyst was first used in esterification of linoleic acid to catalyze the synthesis of ethyl linoleate. The effects of raw material ratio, reaction time and catalyst dosage on esterification of linoleic acid with ethanol were investigated. The optimum reaction conditions are as follows: n (absolute ethanol) /n (linoleic acid) =4, w (catalyst) =3% (relative to linoleic acid), and the reaction time is 8 hours, and the conversion rate of linoleic acid can reach 93%.
3. Research progress of solid superacid catalysts
E-mail of editorial department of Liaoning chemical industry 0 1, 2005
Author Zhou Zhifeng
SETTING: Liaoning Petrochemical Technology and Economic Information Center, Shenyang, Liaoning
Esterification of solid superacid; acetal reaction
Solid superacid; Esterification reaction; Ketal reaction
The characteristics and preparation methods of solid superacid catalysts were introduced. The catalytic effects of solid superacid catalysts on acetal (ketone) reaction and esterification reaction were discussed. The research and development trend of solid superacid catalysts were prospected.
4. Synthesis of tributyl citrate catalyzed by solid superacid.
Journal name applied chemical industry, editorial office e-mail 0 1, 2005
Author Wang Xianyang
SETTING: Department of Chemistry, Anhui Medical University, Hefei, Anhui
Solid superacid catalysis; Tributyl citrate; esterify
Keywords: esterification of tributyl citrate with solid superacid s _ 2o _ 8 ~ (2-)/TiO _ 2-ZrO _ 2.
Tributyl citrate was synthesized with solid superacid S2O82-/TiO _ 2ZrO _ 2 as catalyst. The effects of catalyst preparation conditions on catalytic activity, molar ratio of acid to alcohol, reaction time and catalyst dosage on esterification rate were investigated. Experiments show that S2O82-/TiO _ 2ZrO _ 2 has good catalytic activity. The highest activity of the catalyst was obtained by impregnating TiO 2-ZrO 2-ZrO 2 2-ZrO _ 2 with 0.5 mol/L (NH _ 4) 2S _ 2O _ 8 solution, filtering and calcining at 500℃ for 3 hours. When the molar ratio of acid to alcohol is 1∶4, the reaction time is 3h, and the amount of catalyst is 65438+ 0.5% of the total amount of reactants, the esterification rate can reach above 98.5%.
5. Alkylation of o-xylene and styrene in WO3/ZrO _ 2 solid superacid
The name of the publication is Journal of University of Petrochemical Technology, and the email address of the editorial department is 0 1 2005.
The author is Zhao Gao.
Institution Liaoning University of Petrochemical Technology College of Petrochemical Technology Fushun, Liaoning
Solid superacid; Alkylation; 1- phenyl-1-(3,4-dimethylphenyl)-ethane
English keywords: solid superacid alkylation PXE
WO3/ zirconia solid superacid catalyst was prepared from zirconium chloride 8H2O and (NH4)6h2w 12o 40 by precipitation, aging, filtration, washing, drying, impregnation and roasting. The acid strength and acid center type were determined by Hammett indicator method and infrared spectrum of pyridine adsorption. The alkylation of o-xylene with styrene to prepare 1- phenyl-1-(3,4-dimethylphenyl)-ethane (PXE) was studied. The effects of calcination temperature, WO3 loading, reaction temperature, reaction time and catalyst dosage on the reaction and catalyst stability were investigated. The results show that WO3/ZrO2 system with WO3 loading of 5% ~ 15% can form superacid at 750 ~ 850℃, and there are Lewis acid centers and Bronsted acid centers on its surface, which can be transformed into each other. WO3/ zirconia solid superacid catalyst showed good catalytic performance and stability in the alkylation of styrene and o-xylene. The optimum experimental conditions of the reaction were as follows: reaction temperature 65438 000℃, n (o-xylene) /n (styrene) =5.0, reaction time 5h, and catalyst dosage 2.0g
6. Study on the synthesis of diethyl adipate catalyzed by solid superacid.
E-mail box 0 1 of editorial department of Tianjin chemical industry, 2005
Author Wang Longjie, Lu Zeqin,
Organization: Editorial Department of Journal of Guangxi Normal University, College of Chemistry and Chemical Engineering, Guilin, Guangxi Normal University
Diethyl adipate; Titanium dioxide-zirconia/sulfate; Solid superacid; Catalytic synthesis
Dibutyl adipate; Dibutyl titanate; Solid superacid; Analysis; compound
Diethyl adipate was synthesized with composite solid superacid TiO _ 2-ZrO _ 2/SO _ 42-as catalyst. The effects of reaction time, raw material ratio and catalyst dosage on the reaction were investigated, and the optimum reaction conditions were determined. Under these conditions, the yield of diethyl adipate reached 96.5%.
7. Synthesis of cyclohexene catalyzed by composite solid superacid SO4 ~(2-)/al2o 3(fe2o 4)3.
The name of the publication is Journal of Changji University, and the email address of the editorial department is 0 1 2005.
Author qi, zhihong, Xue laiqi,
Institution: Department of Chemical Engineering, Changji University, Xinjiang
Solid superacid SO42-/Al2 (Fe2O4) 3; Catalytic cyclohexene
Cyclohexene was successfully prepared by using a new composite solid catalyst so42-/al2o 3(fe2o 4)3 as dehydrating agent for cyclohexanol, and the effects of catalyst dosage, reaction temperature and reaction time were discussed. The experimental results show that SO _ 42-/Al _ 2O _ 3 (Fe _ 2O _ 4) _ 3 is a good catalyst for the dehydration of cyclohexanol to cyclohexene, and the reaction time is short, the post-treatment is easy and the amount of catalyst is small. The optimum technological conditions of dehydration reaction are as follows: the amount of catalyst is 6% of the mass of cyclohexanol, the reaction temperature is 1.50℃, Al/Fe = 1: 2 (molar ratio), and the reaction time is 0.9 h.
Title source year source database
1 1 Preparation of magnetic nano-solid superacid Applied Science and Technology 2005/0 1 Full-text Database of China Academic Journals
12 synthesis of cyclohexene catalyzed by composite solid superacid SO_4~(2-)/Al_2(Fe_2O_4)_3 Journal of Changji University 2005/0 1 Full-text database of China academic journals.
13 infrared spectral study and spectral analysis of metal-doped nano-solid superacid SO_4~(2-)/ZrO_2 2005/03 China academic journal full-text database
14 synthesis of dibutyl oxalate catalyzed by rare earth solid superacid Journal of Chemistry 2005/02 Full-text database of China academic journals
15 magnetic sulfate/iron oxide (? ) synthesis of dibutyl sebacate catalyzed by zirconia solid superacid chemical industry and engineering technology 2005/0 1 China academic journal full-text database
16 BST preparation of solid superacid catalyst chemical industry and engineering 2005/03 full-text database of China academic journals.
Study on Radioactive Decontamination of 17 SO_4~(2-)/TiO_2 Strippable Membrane Doped with Solid Superacid Functional Materials 2005/04 Full-text Database of China Academic Journals
Preparation and application of 18 SO_4~(2-)/TiO_2-SiO_2 solid superacid Journal of Anhui University of Technology (Natural Science Edition) 2005/03 Full-text database of China academic journals.
19 rare earth solid superacid SO_4~(2-)/TiO_2/Sm~(3+) catalytic synthesis of diarylethane research chemical engineer 2005/04 Full-text database of China academic journals.
Synthesis and properties of 20 magnetic nano-solid superacid catalyst (SO4 ~ (2-)/ZrO _ 2-Ni _ (0.5) Fe _ (2.5) O _ 4).
Study on the catalytic performance of 2 1 new solid superacid S_2O_8~(2-)/TiO_2 for esterification: Proceedings of the Symposium on Inorganic Chemistry and Chemical Engineering in the Midwest of chinese chemical society in 2005; Full-text database of important conference papers in China in 2005.
22 preparation, characterization and catalytic synthesis of dibutyl phthalate of rare earth solid superacid Nd_2O_3-Fe_2O_3/SO_4~(2-) 2005/04 full-text database of China academic journals.
Preparation and application of 23 nanometer solid superacid SO_4~(2-)Fe_2O_3. Full-text database of China academic journals.
24 synthesis of sec-butyl acetate with solid superacid SO_4~(2-)/TiO_2 China academic journal Liaoning chemical full-text database in April 2005.
25 Study on Acidity of Solid Superacid Catalyst S _ 2O _ 8 ~ (2-)/ZrO _ 2-SiO _ 2-SM _ 2O _ 3 Journal of Inner Mongolia University (Natural Science Edition) 2005/03 Full-text Database of China Academic Journals
Orthogonal experimental study on synthesis of n-amyl acetate catalyzed by 26 SO_4~(2-)/TiO_2-Al_2O_3 solid superacid: Journal of Jilin Normal University (Natural Science Edition) 2005/0 1 China Academic Journal Full-text Database.
27 Synthesis of Isooctyl Chloroacetate Catalyzed by Solid Superacid Tianjin Chemical Industry 2005/02 China Academic Journal Full-text Database
Synthesis of di-n-octyl phthalate (DnOP) catalyzed by solid superacid SO_(2-)~4/TiO_2-ZrO_2 Journal of Tangshan College 2005/02 Full-text database of China academic journals.
Synthesis of dibutyl phthalate catalyzed by rare earth solid superacid SO4 ~ (2-)/TiO _ 2/La ~ (3+) Journal of Xi 'an University of Science and Technology 2005/0 1 Full-text Database of China Academic Journals.
Study on Rare Earth Doped Solid Superacid SO_4~(2-)/TiO_2 Catalytic Synthesis of Diarylethane 2005/02 China Academic Journal Full-text Database
There are also many examples of using solid superacid catalysts. I only copied the title and source, and some abstracts. * * * More than 500 related documents. China's research in this field is not leading. If you really want to write something about this, you can consult appropriate foreign language materials.