Dehydrogenation of isobutane over Sn/Pt/Na-ZSM-5 catalysts: The effect of SiO2/Al2O3 ratio, amount and distribution of Pt nanoparticles on the catalytic behavior

被引：6

作者：

Vaezifar, Sedigheh ^{[2
,5
]}

Faghihian, Hossein ^{[3
]}

Kamali, Mandi ^{[1
,4
]}

机构：

[1] Univ Isfahan, Engn Res Ctr, Chem Proc Res Dept, Esfahan 8174673441, Iran

[2] Isfahan Univ Technol, Dept Mat Engn, Biomat Grp, Esfahan, Iran

[3] Islamic Azad Univ, Dept Chem, Shahreza Branch, Esfahan, Iran

[4] Univ Isfahan, Fac Adv Sci & Technol, Esfahan 8174673441, Iran

[5] Fadak Chem Co, ISTT, Esfahan, Iran

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2011年 / 28卷 / 02期

关键词：

Na-ZSM-5; SiO2/Al2O3; Ratio; Bimetallic Catalysts; Pt/Sn Nanoparticles; Dehydrogenation of Isobutane; COKE FORMATION; ZEOLITE-Y;

D O I：

10.1007/s11814-010-0369-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Sn/Pt/Na-ZSM-5 was used as catalyst for the dehydrogenation of isobutane, and the effect of SiO2/Al2O3 ratio and the dispersion of Pt nanoparticles on the conversion and product selectivity were studied under atmospheric pressure at 848 K. The catalysts were characterized by various techniques such as H-2 chemisorption, TEM, SEM, EDX, XRD, FT-IR, TG/DTG, elemental analysis by XRF and ICP techniques. Higher dispersion of Pt nanoparticles in the catalyst with SiO2/Al2O3 ratio of 40 resulted in higher selectivity for isobutene.

引用

页码：370 / 377

页数：8

共 37 条

[1] Surface organometallic chemistry on metals in water - Chemical modification of platinum catalyst surface by reaction with hydrosoluble organotin complexes: application to the selective dehydrogenation of isobutane to isobutene [J].

Bentahar, FZ ;

Candy, JP ;

Basset, JM ;

Le Peltier, F ;

Didillon, B .

CATALYSIS TODAY, 2001, 66 (2-4) :303-308

[2] The synthesis of large crystals of zeolite Y re-visited [J].

Berger, C ;

Gläser, R ;

Rakoczy, RA ;

Weitkamp, J .

MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 83 (1-3) :333-344

[3]

BHATTACHARYA A, 1992, J CHEM TECHNOL BIOT, V54, P399

[4]

BOX EO, 1970, Patent No. 2127353

[5] Platinum aluminophosphate oxynitride (Pt-AlPON) catalysts for the dehydrogenation of isobutane to isobutene [J].

Centeno, MA ;

Debois, M ;

Grange, P .

JOURNAL OF CATALYSIS, 2000, 192 (02) :296-306

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

Cortright, RD ;

Hill, JM ;

Dumesic, JA .

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

[7] Preparation of highly dispersed Pt particles in zeolite Y with a narrow particle size distribution: Characterization by hydrogen chemisorption, TEM, EXAFS spectroscopy, and particle modeling [J].

de Graaf, J ;

van Dillen, AJ ;

de Jong, KP ;

Koningsberger, DC .

JOURNAL OF CATALYSIS, 2001, 203 (02) :307-321

[8] Fast and efficient synthesis of ZSM-5 in a broad range of SiO2/Al2O3 without using seeding gel [J].

Ghiaci, M ;

Seyedeyn-Azad, F ;

Kia, R .

MATERIALS RESEARCH BULLETIN, 2004, 39 (09) :1257-1264

[9]

Hornaday G. F., 1961, ADV PETROL CHEM REFI, P451

[10]

Hutson T., 1986, HDB PETROLEUM REFINI

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