fulltext.study @t Gmail

Tandem catalytic synthesis of light isoparaffin from syngas via Fischer–Tropsch synthesis by newly developed core–shell-like zeolite capsule catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
54616 47017 2013 7 PDF Available
Title
Tandem catalytic synthesis of light isoparaffin from syngas via Fischer–Tropsch synthesis by newly developed core–shell-like zeolite capsule catalysts
Abstract

•Two new methods are presented for zeolite capsule catalyst preparation.•One is an improved hydrothermal synthesis process.•Another is an initially reported method without employing hydrothermal synthesis.•Zeolite capsule catalysts realize tandem catalytic synthesis with higher efficient.

One-step synthesis of light isoparaffin from syngas via Fischer–Tropsch synthesis (FTS) belongs to the tandem catalysis process, for which the most used catalyst is hybrid catalyst prepared by simply mixing FTS catalyst and zeolite catalyst. The zeolite capsule catalyst with a core–shell structure has proved its excellent performance for tandem catalysis process [1], as well as the one-step synthesis of light isoparaffin from syngas mentioned before [2]. However, the usually used hydrothermal synthesis way for zeolite shell preparation limits the design and preparation of various zeolite shell enwrapping different core catalysts, the industrial scalability of zeolite capsule catalyst, and so on. In this report, with a traditional FTS catalyst of 10 wt% Co/SiO2 as core catalysts, we present two methods for H-ZSM-5 zeolite capsule catalyst preparation. One is an improved hydrothermal synthesis process named stepwise-synthesis, another is an initially reported method that does not employ hydrothermal synthesis approach for H-ZSM-5 zeolite shell preparation. For the last one, we call it physically adhesive (PA) method in this report. The two types of H-ZSM-5 zeolite capsule catalysts prepared by these two methods are investigated via FTS reaction to evaluate their catalytic performance on the direct synthesis of light isoparaffin from syngas. Since the space-confined and synergistic function offered by the special core–shell structure, both of two types of H-ZSM-5 zeolite capsule catalysts could readily realize the one-step synthesis of light isoparaffin with higher selectivity, better than that of the conventional hybrid catalyst. The PA method presented in this report is very cost-saving, reliable and scalable, with which we can realize the industrialization of zeolite capsule catalyst more readily.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (105 K)Download as PowerPoint slide

Keywords
Isoparaffin; Fischer–Tropsch synthesis; Zeolite capsule catalyst; Zeolite; Tandem catalysis
First Page Preview
Tandem catalytic synthesis of light isoparaffin from syngas via Fischer–Tropsch synthesis by newly developed core–shell-like zeolite capsule catalysts
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 215, 15 October 2013, Pages 29–35
Authors
, , , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us