:Aromatization and isomerization of methylcyclohexane over Ni catalysts supported on different supports论文

:Aromatization and isomerization of methylcyclohexane over Ni catalysts supported on different supports论文

本文主要研究内容

作者(2019)在《Aromatization and isomerization of methylcyclohexane over Ni catalysts supported on different supports》一文中研究指出:In this work, nickel metal supported on different supports(SiO2, Al2O3, ZSM-5) were prepared by spraying nickel nitrate on the supports and calcined at 873 K. Then, they were characterized by XRD, XRF, N2 adsorption–desorption, NH3-TPD, MCH-TPD, H2-TPR, and pyridine-FTIR,and tested as catalysts for the dehydrogenation aromatization and isomerization of methylcyclohexane(MCH) under the conditions of S-Zorb catalytic adsorption desulfurization(T ? 673 K, P ? 1.5 MPa, WHSV ? 5 h-1). The H2-TPR results showed that the interaction of NiO with support decreased in the order of NiO/ZSM-5-Fe < NiO/ZSM-5 < NiO/Al2O3< NiO/SiO2. The decrease of the interaction appeared to facilitate the reduction of Ni and therefore to promote the dehydrogenation aromatization of MCH.It was found that a direct correlation existed between the gasoline components yields, cracking activity and the total number of different supports acid sites measured by NH3-TPD tests. Higher total acidity of ZSM-5 resulted in gasoline loss because of higher cracking activity of MCH. The number of total acid sites of NiO/ZSM-5-Fe decreased and the medium strong Br€onsted acid sites necessary for MCH isomerization increased after the modification of ZSM-5 by iron metal. So, NiO/ZSM-5-Fe exhibited enhanced MCH conversion, aromatic and isomerization yields when compared to NiO/ZSM-5 and other Ni-based catalysts. This study shows that NiO/ZSM-5-Fe catalyst may be possible to be integrated into the S-Zorb system achieving the recovery of the octane number of gasoline.

Abstract

In this work, nickel metal supported on different supports(SiO2, Al2O3, ZSM-5) were prepared by spraying nickel nitrate on the supports and calcined at 873 K. Then, they were characterized by XRD, XRF, N2 adsorption–desorption, NH3-TPD, MCH-TPD, H2-TPR, and pyridine-FTIR,and tested as catalysts for the dehydrogenation aromatization and isomerization of methylcyclohexane(MCH) under the conditions of S-Zorb catalytic adsorption desulfurization(T ? 673 K, P ? 1.5 MPa, WHSV ? 5 h-1). The H2-TPR results showed that the interaction of NiO with support decreased in the order of NiO/ZSM-5-Fe < NiO/ZSM-5 < NiO/Al2O3< NiO/SiO2. The decrease of the interaction appeared to facilitate the reduction of Ni and therefore to promote the dehydrogenation aromatization of MCH.It was found that a direct correlation existed between the gasoline components yields, cracking activity and the total number of different supports acid sites measured by NH3-TPD tests. Higher total acidity of ZSM-5 resulted in gasoline loss because of higher cracking activity of MCH. The number of total acid sites of NiO/ZSM-5-Fe decreased and the medium strong Br€onsted acid sites necessary for MCH isomerization increased after the modification of ZSM-5 by iron metal. So, NiO/ZSM-5-Fe exhibited enhanced MCH conversion, aromatic and isomerization yields when compared to NiO/ZSM-5 and other Ni-based catalysts. This study shows that NiO/ZSM-5-Fe catalyst may be possible to be integrated into the S-Zorb system achieving the recovery of the octane number of gasoline.

论文参考文献

  • [1].Cluster-cracking Reaction, a New Method to Synthesize Unsymmetrical Dithiolate Complexes for the Study of Third-Order Nonlinear Optical Properties[J]. 卞国庆,朱琴玉,戴洁,王昕,杨巍,严泽民,孙真荣,宗像惠,前川雅彦.  Chinese Journal of Chemistry.2003(05)
  • [2].Shrinkage and cracking behavior of high performance concretes containing chemical admixtures[J]. 亓萌,李宗津,马保国.  Journal of Zhejiang University Science.2002(02)
  • [3].PetroChina Develops Co-cracking of C4 with Light Ends to Broaden the Source of Steam Cracker Feed[J].   China Petroleum Processing & Petrochemical Technology.2014(03)
  • [4].High activity in catalytic cracking of large molecules over micro-mesoporous silicoaluminophosphate with controlled morphology[J]. QI Jian1,ZHAO TianBo1*,XU Xin1,LI FengYan2 & SUN GuiDa2 1Institute for Chemical Physics,Beijing Institute of Technology,Beijing 100081,China 2Department of Applied Chemistry,Beijing Institute of Petrochemical Technology,Beijing 102617,China.  Science China(Chemistry).2010(11)
  • [5].Study on the Catalyst for Catalytic Cracking of Light Gasoline to Produce Propylene[J]. Cao Zhitao~1;Sun Chengjia~2 (1.Research Institute of PetroChina Liaoyang Petrochemical Company,Liaoyang 111003;2.PetroChina Hubei Marketing Company,Wuhan 430000).  China Petroleum Processing and Petrochemical Technology.2010(03)
  • [6].FAILURE ANALYSIS AND INSPECTION OF CRACKING OF IN-SERVICE CATALYTIC REGENERATOR[J]. Chen Xuedong Guan Weihe Chen Wenhu Yao Zuoquan Hefei General Machinery Research Institute, Hefei 230031, ChinaGu Xuedong Wang Zhaowei Shanghai Gaoqiao Petrochemical Company.  Chinese Journal of Mechanical Engineering(English Edition).2002(02)
  • [7].Preparation of phosphorus-modified PITQ-13 catalysts and their performance in 1-butene catalytic cracking[J]. Penghui Zeng,Yun Liang,Shengfu Ji,Baojian Shen,Honghai Liu,Baojie Wang,Hongjuan Zhao,Mingfu Li.  Journal of Energy Chemistry.2014(02)
  • [8].CFD Simulation on Ethylene Furnace Reactor Tubes[J]. Lan Xingying1, Xu Chunming1, Gao Jinsen1 and Zhang Hongmei2 (1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China) (2. Department of Petrochemical Engineering, Daqing Petroleum Institute, Heilongjiang 131400, China).  Petroleum Science.2006(02)
  • [9].C5 Product Chain Forms Rapidly[J]. Hu Jingmin.  China Chemical Reporter.2009(12)
  • [10].Development and Application of CDOS Series Catalysts for Bottoms Cracking[J]. Wang Mingjin,Xu Mingde,Zhu Yuxia.  China Petroleum Processing & Petrochemical Technology.2013(04)
  • 论文详细介绍

    论文作者分别是来自Green Energy & Environment的,发表于刊物Green Energy & Environment2019年01期论文,是一篇关于,Green Energy & Environment2019年01期论文的文章。本文可供学术参考使用,各位学者可以免费参考阅读下载,文章观点不代表本站观点,资料来自Green Energy & Environment2019年01期论文网站,若本站收录的文献无意侵犯了您的著作版权,请联系我们删除。

    标签:;  

    :Aromatization and isomerization of methylcyclohexane over Ni catalysts supported on different supports论文
    下载Doc文档

    猜你喜欢