Product yield in methanol conversion over ZSM-5 is predominantly independent of coke content

被引：63

作者：

Bleken, Francesca L. ^{[1
]}

Janssens, Ton V. W. ^{[2
]}

Svelle, Stian ^{[1
]}

Olsbye, Unni ^{[1
]}

机构：

[1] Univ Oslo, Dept Chem, InGAP Ctr Res Based Innovat, Ctr Mat Sci & Nanotechnol SMN, N-0315 Oslo, Norway

[2] Haldor Topsoe Res Labs, DK-2800 Lyngby, Denmark

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2012年 / 164卷

关键词：

ZSM-5; Methanol; MTG; MTH; Model; CATALYZED METHYLATION REACTIONS; ZEOLITE H-ZSM-5; HYDROCARBONS; DEACTIVATION; SELECTIVITY; SAPO-34; SIZE; MTO; OLEFINS; PORE;

D O I：

10.1016/j.micromeso.2012.06.020

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The conversion of methanol to hydrocarbons (MTH) over ZSM-5 with time on stream and resulting product distribution were monitored at 350 degrees C in a series of experiments in which catalyst mass was varied while other conditions were held constant. This method enabled product analysis with respect to degree of deactivation: product distributions at low conversions due to small catalyst loadings could be compared to product distributions at the same conversion due to deactivation. It was found that product selectivity during methanol conversion over ZSM-5 is predominantly independent of coke content. A few products showed a slight sensitivity to deposited coke, and their individual changes suggested that 1,2,4-trimethylbenzene and 1,2,4,5-tetramethylbenzene are intermediates for ethene formation. Yield versus conversion plots further suggested that ethene is converted to higher alkenes by oligomerisation. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：190 / 198

页数：9

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