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Preparation of SO_4^(2-)/TiO_2-La_2O_3 solid superacid and its catalytic activities in acetalation and ketalation

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第7期7卷 553-558页

作者： yang shui-jin BAI Ai-min SUN Ju-tang Department of Chemistry and Environmental Engineering Hubei Normal University Huangshi 435002 China College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China

SO4^2- / TiO2-La2O3, a novel solid superacid, was prepared and its catalytic activities at different synthetic conditions are discussed with esterification of n-butanoic acid and n-butyl alcohol as probing reaction. The optimum conditions have also been found, mole ratio of n（La^3＋）：n（Ti^4＋） is 1：34, the soaked consistency of H2SO4 is 0.8 tool/L, the soaked time of HESO4 is 24 h, the calcining temperature is 480 ℃, the calcining time is 3 h. Then it was applied in the catalytic synthesis often important ketals and acetals as catalyst and revealed high catalytic activity. Under these conditions on which the molar ratio of aldehyde/ketone to glycol is l： 1.5, the mass ratio of the catalyst used in the reactants is 0.5%, and the reaction time is 1.0 h, the yields of ketals and acetals can reach 41.4%-95.8%.

关键词： SO4^2-/ TiO2-La2O3 Rare earth Solid superacid Catalysis

硅钨钼酸掺杂聚苯胺催化合成丁酮1,2-丙二醇缩酮

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北京化工大学学报（自然科学版） 2005年第5期32卷 88-91页

作者：杨水金王敏湖北师范学院化学与环境工程系湖北黄石435002 华中师范大学化学学院湖北武汉430079

自制了硅钨钼酸(H4SiW6Mo6O40)掺杂聚苯胺(PAn)催化剂H4SiW6Mo6O40/PAn。通过丁酮和1,2-丙二醇为原料合成丁酮1,2-丙二醇缩酮,探讨了硅钨钼酸掺杂聚苯胺催化剂对缩酮反应的催化活性,较系统地研究了原料量比,催化剂用量,反应时间诸因素... 详细信息

自制了硅钨钼酸(H4SiW6Mo6O40)掺杂聚苯胺(PAn)催化剂H4SiW6Mo6O40/PAn。通过丁酮和1,2-丙二醇为原料合成丁酮1,2-丙二醇缩酮,探讨了硅钨钼酸掺杂聚苯胺催化剂对缩酮反应的催化活性,较系统地研究了原料量比,催化剂用量,反应时间诸因素对产品收率的影响。实验表明:硅钨钼酸掺杂聚苯胺是合成丁酮1,2-丙二醇缩酮的良好催化剂,在n(丁酮)∶n(1,2-丙二醇)=1∶1.7,催化剂用量为反应物料总质量的0.6%,环己烷为带水剂,反应时间40 min的优化条件下,丁酮1,2-丙二醇缩酮的收率可达83.1%。

关键词：丁酮 1,2-丙二醇缩酮硅钨钼酸聚苯胺缩酮催化

Synthesis of benzaldehyde 1,2-propanediol acetal catalyzed by SO_4^(2-)/TiO_2-MoO_3-La_2O_3 solid superacid

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商丘师范学院学报 2007年第12期23卷 81-83页

作者： yang shui-jin XIA Jia GAO Fei Department of Chemistry and Environmental Engineering Hubei Teachers College Huangshi 435002 China

Benzaldehyde 1,2-propanediol acetal was synthesized from benzaldehyde and 1,2-propanediol in the presence of SO42-/*** factors influencing the synthesis were discussed and the best conditions were found *** optimum conditions are:molar ratio of benzaldehyde to 1,2-propanediol is 1:1.8,the quantity of catalyst is equal to 1.0% feed stock,and the reaction time is 1.0 ***42-/TiO2-MoO3-La2O3 is an excellent catalyst for synthesizing benzaldehyde 1,2-propanediol acetal and its yield can reach over 77.2%.

关键词：苯甲醛-1,2-丙二醇乙缩醛催化合成载体

掺杂Tb^(3+)的Na_(24)P_2W_(22)O_(83)的合成及其发光特性

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稀土 2000年第5期21卷 67-68页

作者：杨水金湖北师范学院化学系湖北黄石435002

本文采用固相反应法合成了掺杂 Tb3+ 的 Na2 4P2 W2 2 O83荧光体 ,测定其等离子体发射谱、红外光谱、X射线粉末衍射、激发光谱和发射光谱 ,探讨了掺杂 Tb3+的 Na2 4P2 W2 2 O83

关键词：铽钨磷酸钠合成发光特性掺杂荧光体

H4SiW6Mo6O40-Doped Polyaniline-Synthesis, characterization and catalytic properties of acetals and ketals

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Journal of Chemistry and Chemical Engineering 2008年第4期2卷 35-41页

作者： yang shui-jin DU xin—xian PhilippeG．Merle Hubei Key latboratory of Bioanalytical Technique College of Chemistry and Enviromnental EngineeringHubei Normal University．Huangshi435002China Department of Chemistry and Biochemistry Concordia UniversityMontrealH4B IR6Canada

A new environmental friendly catalyst, HaSiWrMo6O40/PAn was prepared and identified by means of FT-IR, XRD and TG/DTA. The optimum conditions have been found, that was, mass ratio of m（PAn）： m（HaSiW6Mo6On.） was 1：1.25, volume of methanol was 20 mL, and the reflux reaction time was 2h. The structural identity of Keggin units was preserved after the incorporation into polyaniline matrix. H4SiW6Mo6040/PAn was used as catalyst in catalytic synthesis of acetals and ketals. Effects of n（aldehyde（ketone ））： n（glycol）, catalyst dosage and reaction time on yield were investingated. Optimal conditions were： n（aldehyde（ketone））： n（glycol）=1.0： 1.5; mass fraction of catalyst to reactants, 0.5%; reaction time, 1.0 h and cyclohexane as water-stripped reagent, 15 mL. Under these conditions, yields of actels and ketals were 31.9%-91.6%.

关键词： 2,4-dimethyl-2-ethoxycarbonylmethyl-1,3-dioxo-lane H4SiW6Mo6O4O polyaniline acetalation ketalation catalyst

Catalytic synthesis of benzaldehyde glycol acetal over H3PW6Mo6O40/PAn

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Journal of Chemistry and Chemical Engineering 2008年第6期2卷 29-32页

作者： yang shui-jin GAO Fei LV Bao-lan Hubei Key Laboratory of Bioanalytical Technique College of Chemistry and Environmental Engineering Hubei Normal University Huangshi 435002 China

Catalytic activities of H3PWrMo6O40/PAn in synthesizing benzaldehyde glycol acetal were reported. It has been demonstrated that H3PW6MorO40/PAn is an excellent catalyst. Various factors concerned in the reaction have been investigated. The optimum conditions have been found, that is, the molar ratio of benzaldehyde to glycol is 1/1.4, the mass ratio of the catalyst used to the reactants is 0.8%, and the reaction time is 45min. Under these conditions, the yield of benzaldehyde glycol acetal is 79.0%.

关键词： benzaldehyde glycol acetal H3PWrMo6O40/PAn polyaniline aetalization

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固体超强酸催化合成丁醛1,2-丙二醇缩醛

林产化学与工业 2006年第1期26卷 132-134页

作者：杨水金夏佳湖北师范学院化学与环境工程系湖北黄石435002

以固体超强酸SO42-/TiO2-MoO3为催化剂,对以丁醛和1,2-丙二醇为原料合成丁醛1,2-丙二醇缩醛的反应条件进行了研究。实验表明:在固体超强酸SO42-/TiO2中添加MoO3有利于产物的合成,具有更好的催化活性。较系统地研究了醛醇摩尔比、催化剂... 详细信息

以固体超强酸SO42-/TiO2-MoO3为催化剂,对以丁醛和1,2-丙二醇为原料合成丁醛1,2-丙二醇缩醛的反应条件进行了研究。实验表明:在固体超强酸SO42-/TiO2中添加MoO3有利于产物的合成,具有更好的催化活性。较系统地研究了醛醇摩尔比、催化剂用量、反应时间等因素对得率的影响。最佳反应条件为:丁醛与1,2-丙二醇摩尔比(n丁醛∶n1,2-丙二醇)为1∶1.5,催化剂用量为反应物料总质量的0.5%,环己烷为带水剂,反应时间45 m in。上述条件下,SO42-/TiO2-MoO3是合成丁醛1,2-丙二醇缩醛的良好催化剂,其得率可达87.5%.

关键词：丁醛1,2-丙二醇缩醛固体超强酸缩醛化

Catalytic synthesis of acetals and ketals with H3PW6Mo6O40/TiO2

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Journal of Chemistry and Chemical Engineering 2007年第1期1卷 8-11,39页

作者： yang shui-jin TONG Wen-long Philippe G. Merle Hubei Key Laboratory of Bioanalytical Technique Department of Chemistry and Environmental Engineering Hubei Normal University Huangshi 435002 China Department of Chemistry and Biochemistry Concordia University Montreal H4B 1R6 Canada

A new environmental friendly catalyst, H3PW6Mo6O40/TiO2 was prepared. The optimum conditions have been found, that is, mass ratio of m （TiO2）： m （H3PW6Mo6O40） is 1：2.0, volume of water is 30 mL, the reflux reaction time is 2 h, and activated temperature is 150 ℃. H3PW6Mo6O40/TiO2 was used as catalyst in catalytic synthesis ofacetals and ketals. Effects ofn （aldehyde（ketone））： n （glycol）, catalyst dosage and reaction time on yield were investigated. Optimal conditions were： n（aldehyde （ketone））： n （glycol）=1.0 ： 1.4; mass fraction of catalyst to reactants, 0.8%; reaction time, 1.0 h and cyclohexane as water-stripped reagent, 10 mL. Under these conditions, yields of acetals and ketals can reach 53.0% -86.9 0%

关键词： H3PW6Mo6O40 TiO2 acetalation ketalation catalysis

Br掺杂Bi_(2)WO_(6)微球的制备及其光催化性能

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无机化学学报 2022年第9期38卷 1716-1728页

作者：周鑫张志陈飘杨水金杨赟湖北师范大学化学化工学院污染物分析与资源化技术湖北省重点实验室黄石435002 汉江师范学院化学与环境工程学院十堰442000

以五水合硝酸铋和二水合钨酸钠为原料,以十六烷基三甲基溴化铵(CTAB)为溴源,制备Br掺杂Bi_(2)WO_(6),通过调节CTAB的含量,利用水热法制备了Br掺杂量不同的Bi_(2)WO_(6)催化剂。以抗生素环丙沙星、诺氟沙星作为污染物,测试Br掺杂Bi_(2)WO... 详细信息

以五水合硝酸铋和二水合钨酸钠为原料,以十六烷基三甲基溴化铵(CTAB)为溴源,制备Br掺杂Bi_(2)WO_(6),通过调节CTAB的含量,利用水热法制备了Br掺杂量不同的Bi_(2)WO_(6)催化剂。以抗生素环丙沙星、诺氟沙星作为污染物,测试Br掺杂Bi_(2)WO_(6)催化剂的光催化性能。结果表明,2%掺杂量(物质的量分数)的Bi_(2)WO_(6)相比于Bi_(2)WO_(6)的光催化降解性能最好。此外,通过X射线粉末衍射、红外光谱、扫描电镜、荧光光谱、X射线光电子能谱和拉曼光谱等一系列表征,对Br掺杂后催化剂的物相组成、微观形貌、光生电荷分离率和光学性质等进行分析。最后进行了自由基捕获实验并提出了可能的光催化机理。

关键词： Bi_(2)WO_(6) 微球光催化性能