Use of Al2O3-SnO2 as a support of Pt for selective dehydrogenation of light paraffins

被引：55

作者：

Ballarini, Adriana D. ^{[1
]}

Ricci, Claudia G. ^{[1
]}

de Miguel, Sergio R. ^{[1
]}

Scelza, Osvaldo A. ^{[1
]}

机构：

[1] Univ Nacl Litoral, CONICET, Fac Ingn Quim, Ins Invest Catalisis & Petroquim INCAPE, RA-3000 Santa Fe, Argentina

来源：

CATALYSIS TODAY | 2008年 / 133卷 / 1-4期

关键词：

metallic catalysts for n-butane dehydrogenation; Al2O3-SnO2; support; catalyst preparation; catalyst characterization;

D O I：

10.1016/j.cattod.2007.11.055

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The influence of the preparation methods of Al2O3-SnO2 on the catalytic behaviour of Pt supported on the above supports in the n-butane dehydrogenation reaction was studied. Two methods were used for the preparation of the support with different Sn loadings: (i) incipient impregnation and (ii) impregnation with an excess of solution. It was determined that the second preparation method would lead to more homogeneous catalysts than the incipient impregnation with SnCl2. Different characterization techniques (XPS, TPR, SEM, test reactions of the acidic and metallic functions, H-2 chemisorption) showed that geometric effects and also possible electronic effects between Pt and Sn with probable alloys formation could take place in Pt/Al2O3-SnO2 catalysts. In all cases it was found an excellent behaviour in the n-butane dehydrogenation even when higher Sn contents in the support were used. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：28 / 34

页数：7

共 24 条

[1]

ANTONOV PG, 1982, ZH NEORG KHIM+, V27, P3130

[2] Performance of PtSn catalysts supported on MAl2O4 (M: Mg or Zn) in n-butane dehydrogenation:: characterization of the metallic phase [J].

Bocanegra, SA ;

Guerrero-Ruiz, A ;

de Miguel, SR ;

Scelza, OA .

APPLIED CATALYSIS A-GENERAL, 2004, 277 (1-2) :11-22

[3] n-butane dehydrogenation on PtSn supported on MAl2O4 (M: Mg or Zn) catalysts [J].

Bocanegra, SA ;

de Miguel, SR ;

Castro, AA ;

Scelza, OA .

CATALYSIS LETTERS, 2004, 96 (3-4) :129-140

[4] HIGH-TEMPERATURE TREATED PT/SN-ZNAL2O4 CATALYSTS [J].

BOSCH, P ;

VALENZUELA, MA ;

ZAPATA, B ;

ACOSTA, D ;

AGUILARRIOS, G ;

MALDONADO, C ;

SCHIFTER, I .

JOURNAL OF MOLECULAR CATALYSIS, 1994, 93 (01) :67-78

[5]

Boudart M., 1969, ADV CATAL, V20, P153, DOI DOI 10.1016/S0360-0564(08)60271-0

[6] CATALYSTS FOR THE SELECTIVE DEHYDROGENATION OF HIGH-MOLECULAR-WEIGHT PARAFFINS [J].

CASTRO, AA .

CATALYSIS LETTERS, 1993, 22 (1-2) :123-133

[7]

CINNEIDE AD, 1972, CATAL REV, V7, P233

[8]

CORTEZ GG, 1992, J CHEM TECHNOL BIOT, V53, P77

[9] Selective dehydrogenation of isobutane over supported Pt/Sn catalysts [J].

Cortright, RD ;

Hill, JM ;

Dumesic, JA .

CATALYSIS TODAY, 2000, 55 (03) :213-223

[10] Characterization of gamma-alumina doped with Li and K by infrared studies of CO adsorption and Al-27-NMR [J].

de Miguel, Sergio R. ;

Scelza, Osvaldo A. ;

Castro, Alberto A. ;

Soria, Javier .

TOPICS IN CATALYSIS, 1994, 1 (1-2) :87-94

← 1 2 3 →