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Preparation,characterization and catalytic properties of S_2O_8^(2-)/ZrO_2-CeO_2 solid superacid catalyst

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Journal of Rare Earths 2009年第3期27卷 437-442页

作者：樊国栋沈茂张昭贾发瑞 Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry Ministry of EducationShaanxi University of Science and Technology Shanxi Irico Photo Electronic Material Corporation Research and Development Department

A novel solid superacid catalyst S2O8^2-/ZrO2-CeO2 was prepared by a coprecipitation method and characterized by means of XRD FTIR, BET, TEM and DSC/TG analysis methods. The results indicated that incorporation of appropriate amounts of Ce into the catalyst was beneficial to the formation of sole tetragonal ZrO2 and effectively prevented from the formation of monoclinic ZrO〉 and restrained the loss of sulfated species. XRD revealed the presence of tetragonal Ce0.16Zr0.84O2phase in the case of S2O8^2-/ZrO2-CeO2 calcined above 500 ℃. Catalytic activities of S2O8^2-/ZrO2-CeO2 for the esterification of lactic acid with n-butanol was studied. The results showed that the optimum conditions were as follows： calcination temperature of the catalyst 600 ℃, n（lactic acid）：n（n-butyl alcohol）=1.0：3.0, w（S2O8^2-/ZrO2- CeO2）=12.0%, reaction temperature 145 ℃, and reaction time 2 h. The esterification efficiency of lactic acid was about 96.6%.

关键词： solid superacid catalyst S2O8^2-/ZrO2-CeO2 n-butyl lactate esterification rare earths

Catalytic Hydrothermal Liquefaction of Algae for Production of Bio-oil with solid superacid catalyst SO_(4)^(2−)/ZrO_(2)

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Journal of Ocean University of China 2022年第5期21卷 1214-1226页

作者： LIU Mengfan YU Xin YU Xiaofan ZHAO Yongnian FENG Lijuan LI Xianguo YAO Shuo Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China

solid superacid SO_(4)^(2−)/ZrO_(2)as heterogeneous catalyst was prepared to upgrade the bio-oil in the progress of hydrother-mal liquefaction(HTL)for the represented algae of Chlorella vulgaris and Enteromorpha *** solid superacid catalyst could obviously adjust the composition of the bio-oil and improve the higher heating values(HHVs).The catalytic performance could be regulated by adjusting the acid amount and acid strength of SO_(4)^(2−)/ZrO_(2).Furthermore,it was explored the catalytic effects of SO_(4)^(2−)/ZrO_(2)by the HTL for algae major model components,including polysaccharides,proteins,lipids,binary mixture and ternary *** results showed that the introducing of SO_(4)^(2−)/ZrO_(2)catalyst could increase the yields of bio-oil from proteins and lipids,and avoid the Maillard reaction between polysaccharides and ***,a possible reaction pathway and mechanisms has proposed for the formation of bio-oils from HTL of algae catalyzed by SO_(4)^(2−)/ZrO_(2)based on the systematic research of the producing bio-oil from major model components.

关键词： bio-oil heterogeneous catalyst solid superacid catalyst hydrothermal liquefaction algae major model components

Friedel-Crafts Acylation of Ferrocene Catalyzed by solid superacid,Silica-supported Polytrifluoromethanesulfosiloxane

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Chinese Chemical Letters 2005年第2期16卷 183-185页

作者： RuiJueHU BaoGuoLI MinXU CollegeofChemistryandChemicalEngineering InnerMongoliaUniversityHohhot010021

solid superacid, silica-supported polytrifluoromethanesulfosiloxane (SiO2-Si-SCF3) wasfirstly used in the Friedel-Crafts acylation of ferrocene as a novel catalyst. IR spectra, WAXD andspecific surface area of the sup... 详细信息

关键词： Friedel-Crafts acylation ferrocene solid superacid catalyst silica-supported polytri-fluoromethanesulfosiloxane.