Jiao, Yilai, Fan, Xiaolei, Perdjon, Michal  ORCID: https://orcid.org/0000-0002-0224-1647, Yang, Zhenming and Zhang, Jinsong
2017.
Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction.
Applied Catalysis A: General
545
, pp. 104-112.
10.1016/j.apcata.2017.07.036
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Abstract
Tetrapropylammonium hydroxide (TPAOH) was introduced in the vapor phase to perform the vapor-phase transport (VPT) modification of the structured ZSM-5 supported on SiC foam (ZSM-5/SiC foam) catalyst. An optimum precursor concentration of 0.5 M TPAOH could effectively convert the amorphous aluminosilicate binder to the zeolitic phase with improved intracrystal mesopores, nanosized crystals (ca. 100 nm), high concentration of acidity sites (83 mmol g−1) as well as a high value of the relative acidity (0.7). Combined with the intrinsic property of macroscopic SiC foams such as the low pressure drop and the high thermal conductivity (14 W m−1 K−1 at 773 K), TPAOH VPT modified ZSM-5/SiC foam catalyst demonstrated an excellent activity in the catalytic methanol-to-propylene (MTP) reaction, surpassing the state-of-the-art hierarchal ZSM-5 monolith catalyst. The catalyst showed an extended activity for ca. 970 h (>95% methanol conversion) with the high selectivity to the propylene (>45%). The coke formation was significantly retarded (ca. 2.1 × 10−2 wt.% h−1) due to the enhanced transport phenomena within the developed structured catalyst.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Research Institutes & Centres > Cardiff Catalysis Institute (CCI) Schools > Chemistry |
| Publisher: | Elsevier |
| ISSN: | 0926-860X |
| Date of First Compliant Deposit: | 31 January 2018 |
| Date of Acceptance: | 24 July 2017 |
| Last Modified: | 12 Jun 2023 01:25 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/108662 |
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