ISSN: 0304-128X ISSN: 2233-9558
Copyright © 2024 KICHE. All rights reserved

Articles & Issues

Conflict of Interest
In relation to this article, we declare that there is no conflict of interest.
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.

All issues

제올라이트 담지 Ru-Pt 이원금속 촉매반응에 의한 합성가스로부터 이소파라핀의 생성가구

Reaction Mechanism for Synthesis of Isoalkanes from Syngas over Zeolite Supported Ru-Pt Bimetallic Catalysts

HWAHAK KONGHAK, June 1988, 26(3), 288-294(7), NONE
downloadDownload PDF

Abstract

Y 제올라이트에 담지된 Ru-Pt 이원금속 촉매에 의한 합성가스로부터 이소파라핀이 풍부한 가솔린 유분의 선택적 합성에 대한 반응기구를 probe molecule을 사용하여 연구하였다. 1-octene을 활성금속이 담지되지 않은 dealuminated HY 제올라이트에 반응시킨 결과 이소파라핀이 풍부한 분해생성물을 얻었으며, C3+ 유분의 탄소수분포는 2 wt%의 Ru과 Pt를 dealuminated HY 제올라이트에 담지시켜 행한 CO수소화 반응 결과와 유사하였다. 1-octene을 합성가스에 첨가시킨 혼합가스를 활성금속으로 담지시킨 여러 종류의 촉매에 의해 반응시킨 결과, i/n비를 제외하고는 반응생성물은 유사한 생성물분포를 나타내었다. 따라서 합성가스로부터 이소파라핀의 선택적 생성은 주로 제올라이트의 산촉매 반응에 의해 얻어진다는 결론을 내릴 수 있었다. 또한 이소파라핀의 생성 활성점에 대한 수정된 이원기능 반응기구도 제시하였다.
Probe molecule technique has been applied to clarify the reaction pathway for selective synthesis of isoalkanes in the gasoline range from syngas catalyzed by zeolite Y supported Ru-Pt bimetallic catalysts. Reaction of 1-octene over the metal free dealuminated HY zeolite produced cracking products with high selectivity for isobutanes ; C3+ carbon number distribution was similar to that from CO hydrogenation over dealuminated HY with 2 wt% Ru and 2 wt% Pt. When 1-octene was added into syngas over the various combination of Ru(and/or Pt) catalysts, all the obtained products resulted in similar products pattern besides the i/n ratios of cracking products. Therefore selective formation of isoalkanes from syngas could be essentially due to acid catalyzed reaction on zeolite. With regard to the active center for isoalkane formation modified bifunctional mechanism was also proposed.

Keywords

The Korean Institute of Chemical Engineers. F5, 119, Anam-ro, Seongbuk-gu, 233 Spring Street Seoul 02856, South Korea.
Phone No. +82-2-458-3078FAX No. +82-507-804-0669E-mail : kiche@kiche.or.kr

Copyright (C) KICHE.all rights reserved.

- Korean Chemical Engineering Research 상단으로