CO2气氛下负载型Cr2O3催化剂上乙苯脱氢制苯乙烯反应

催化学报 , 2004, 25(7): 581-585.

CO2气氛下负载型Cr2O3催化剂上乙苯脱氢制苯乙烯反应

叶兴南 ^1, , 华伟明 ^2, , 乐英红 ^3, , 缪长喜 ^4, , 谢在库 ^5, , 高滋 ^6,

1.复旦大学化学系,上海市分子催化和功能材料重点实验室,上海,200433;复旦大学药学院,上海,200032

2.复旦大学化学系,上海市分子催化和功能材料重点实验室,上海,200433

3.复旦大学化学系,上海市分子催化和功能材料重点实验室,上海,200433

4.中国石油化工股份有限公司上海石油化工研究院,上海,201208

5.中国石油化工股份有限公司上海石油化工研究院,上海,201208

6.复旦大学化学系,上海市分子催化和功能材料重点实验室,上海,200433

基金项目: 国家自然科学基金(20303004) 上海市自然科学基金(03ZR14013) 上海市重点基础研究项目(03DJ14004) 上海石油化工研究院资助项目国家重点基础研究发展计划(973计划)(G2000077507)

关键词：乙苯 , 脱氢 , 苯乙烯 , 氧化铬 , 氧化铝 , 氧化硅 , 负载型催化剂 , 二氧化碳

Ethylbenzene Dehydrogenation to Styrene in the Presence of Carbon Dioxide over Supported Chromia Catalysts

采用浸渍法制备了负载型Cr2O3/Al2O3和Cr2O3/SiO2催化剂,并考察了催化剂在CO2气氛下催化乙苯脱氢制苯乙烯反应的活性.结果表明,Cr2O3/Al2O3的催化活性高于Cr2O3/SiO2.这可能是由于Cr2O3在Al2O3载体表面的分散度大大高于在SiO2表面的分散度.催化剂的催化活性与Cr2O3的负载量有关,在w(Cr2O3)=25%时,Cr2O3/Al2O3的催化活性最高.CO2气氛对乙苯脱氢反应有明显的促进作用; 在CO2气氛下,Cr6+物种可能是催化乙苯脱氢反应活性位的前驱体.

参考文献

[1]	Lee E H .[J].Catalyst Review,1973,8(03):285.
[2]	Sato S;Ohhara M;Sodesawa T;Nozaki F .[J].Applied Catalysis,1988,37(1/2):207.
[3]	Mimura N;Takahara I;Saito M;Hattori T,Ohkuma K,Ando M .[J].Catalysis Today,1998,45(1-4):61.
[4]	Sugino M;Shimada H;Turuda T;Miura H, Ikenaga N, Suzuki T .[J].Applied Catalysis A:General,1995,121(01):125.
[5]	Badstube T;Papp H;Dziembaj R .[J].Applied Catalysis A:General,2000,204(01):153.
[6]	Sakurai Y;Suzaki T;Ikenaga N;Suzuki T .[J].Applied Catalysis A:General,2000,192(02):281.
[7]	Sakurai Y;Suzaki T;Nakagawa K;Ikenaga N, Aota H, Suzuki T .[J].Journal of Catalysis,2002,209(01):16.
[8]	Vislovskiy V P;Chang J-S;Park M-S;Park S-E .[J].Catalysis Communications,2002,3(06):227.
[9]	Ikenaga N;Tsuruda T;Senma K;Yamaguchi T, Sakurai Y, Suzuki T .[J].Industrial and Engineering Chemistry Research,2000,39(05):1228.
[10]	Krylov O V;Mamedov A Kh;Mirzabekova S R .[J].Industrial and Engineering Chemistry Research,1995,34(02):474.
[11]	Grzybowska B.;Grabowski R.;Wcislo K.;Kozlowska A.;Stoch J.;Zielinski J.;Sloczynski J. .Chromium oxide alumina catalysts in oxidative dehydrogenation of isobutane[J].Journal of Catalysis,1998(2):687-700.
[12]	Wang S;Murata K;Hayakawa T .[J].Applied Catalysis A:General,2000,196(01):1.
[13]	Gruenert W;Feldhaus R;Shpiro E S;Anders K,Antoshin G V,Minachev K M .[J].Journal of Catalysis,1986,100(01):138.
[14]	Cherian M;Rao M S;Yang W;Jehng J,Hirt A M,Deo G .[J].Applied Catalysis A:General,2002,233(1/2):21.
[15]	Pradier C.M. .Supported chromia catlaysts for oxidation of organic compounds The state of chromia phase and catalytic performance[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2000(2):73-85.
[16]	Zecchina A;Garrone E;Ghiotti G;Morterra C, Borello E .[J].Journal of Physical Chemistry,1975,79(10):966.
[17]	Hakuli A. .Dehydrogenation of i-Butane on CrO_x/SiO_2 Catalysts[J].Journal of Catalysis,1999(2):349-356.
[18]	Rossi S;Pia Casaletto M;Ferraris G;Cimino A, Minelli G .[J].Applied Catalysis A:General,1998,167(02):257.
[19]	Hakuli A.;Krause AOI.;Suntola T.;Kytokivi A. .INITIAL ACTIVITY OF REDUCED CHROMIA/ALUMINA CATALYST IN N-BUTANE DEHYDROGENATION MONITORED BY ON-LINE FT-IR GAS ANALYSIS[J].Journal of Catalysis,1996(1):393-400.
[20]	Weckhuysen B M;Schoonheydt R A .[J].Catalysis Today,1999,51(02):223.
[21]	Park JN.;Chang JS.;Park SE.;Noh J. .Ethylbenzene to styrene in the presence of carbon dioxide over zirconia[J].Catalysis Letters,2000(1/3):75-78.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网