1-Pentene isomerization over zeolites studied by in situ IR spectroscopy

被引：10

作者：

Föttinger, K ^{[1
]}

Kinger, G ^{[1
]}

Vinek, H ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Mat Chem, A-1210 Vienna, Austria

来源：

CATALYSIS LETTERS | 2003年 / 85卷 / 1-2期

基金：

奥地利科学基金会;

关键词：

skeletal isomerization; 1-pentene; FER; BEA; coke;

D O I：

10.1023/A:1022137328316

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The skeletal isomerization of 1-pentene at 1.2 bar total pressure and 30 mbar 1-pentene partial pressure was investigated by in situ IR measurements over FER and BEA zeolites. If the reaction was carried out isothermally small loss of Bronsted acid sites due to coke formation, constant conversion and high selectivity to isopentenes was found over FER. A loss of acid sites and decrease in conversion was found over BEA, but the selectivity to isomerization increased remarkably. The pore size of FER favored the monomolecular reaction of 1-pentene and suppressed bimolecular reactions. In the bigger pores of BEA initially dimerization cracking and hydrogen transfer reactions leading to coke layer took place then the skeletal isomerization of 1-pentene prevailed.

引用

页码：117 / 122

页数：6

共 29 条

[1] Skeletal isomerization of n-butenes - II. Composition, mode of formation, and influence of coke deposits on the reaction mechanism [J].

Andy, P ;

Gnep, NS ;

Guisnet, M ;

Benazzi, E ;

Travers, C .

JOURNAL OF CATALYSIS, 1998, 173 (02) :322-332

[2] Comparative study of the catalytic properties of ZSM-22 and ZSM-35 ferrierite zeolites in the skeletal isomerization of 1-butene [J].

Byggningsbacka, R ;

Kumar, N ;

Lindfors, LE .

JOURNAL OF CATALYSIS, 1998, 178 (02) :611-620

[3] INFRARED STUDY OF COKE ON ALUMINA AND ZEOLITE [J].

DATKA, J ;

SARBAK, Z ;

EISCHENS, RP .

JOURNAL OF CATALYSIS, 1994, 145 (02) :544-550

[4]

DATKA J, 1980, STUD SURF SCI CATAL, V5, P121

[5] Applied molecular simulations over FER-, TON-, and AEL-type zeolites [J].

Domokos, L ;

Lefferts, L ;

Seshan, K ;

Lercher, JA .

JOURNAL OF CATALYSIS, 2001, 203 (02) :351-361

[6] Propene oligomerization on H-mordenite: Hydrogen-bonding interaction, chain initiation, propagation and hydrogen transfer studied by temperature-programmed FTIR and UV-VIS spectroscopies [J].

Geobaldo, F ;

Spoto, G ;

Bordiga, S ;

Lamberti, C ;

Zecchina, A .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (06) :1243-1249

[7] Comments on "Skeletal isomerization of butene: On the role of the bimolecular mechanism" [J].

Guisnet, M ;

Andy, P ;

Gnep, NS ;

Travers, C ;

Benazzi, E .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1998, 37 (01) :300-302

[8] Selective isomerization of n-butenes into isobutene over aged H-ferrierite catalyst: nature of the active species [J].

Guisnet, M ;

Andy, P ;

Boucheffa, Y ;

Gnep, NS ;

Travers, C ;

Benazzi, E .

CATALYSIS LETTERS, 1998, 50 (3-4) :159-164

[9] Isomerization of 1-pentene over SAPO, CoAPO (AEL, AFI) molecular sieves and HZSM-5 [J].

Höchtl, M ;

Jentys, A ;

Vinek, H .

APPLIED CATALYSIS A-GENERAL, 2001, 207 (1-2) :397-405

[10] Skeletal isomerization of n-butene [J].

Houzvicka, J ;

Ponec, V .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1997, 39 (04) :319-344

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