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Preparation of Ni-MCM-41 by equilibrium adsorption — Catalytic evaluation for the direct conversion of ethene to propene

Paper ID Volume ID Publish Year Pages File Format Full-Text
50524 46800 2011 7 PDF Available
Title
Preparation of Ni-MCM-41 by equilibrium adsorption — Catalytic evaluation for the direct conversion of ethene to propene
Abstract

Ni-MCM-41 has been prepared by equilibrium adsorption of different nickel precursors. Nickel citrate and nickel nitrate gave the most active catalysts for the direct transformation of ethene into propene above 250 °C at atmospheric pressure. The maximal ethene conversion at 400 °C was 36% while propene selectivity reached 45%. Analysis of product formation spectra at different temperatures, residence times and inlet compositions revealed reaction kinetics consistent with a sequence of ethene dimerization, positional butene isomerization and propene retro-metathesis.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Equilibrium adsorption gave active catalysts for the ethene to propene reaction. ► Maximal propene selectivity was 45% combined with an ethene conversion of 36%. ► Only minor amounts of byproducts (ethane, iso-butene, and hexenes) were formed. ► Reaction network: ethene dimerization, butene isomerization, and propene retro-metathesis. ► Moderate catalyst deactivation at 375 °C: conversion drop from 36 to 25% in 55 h.

Keywords
Ethene; Propene; Metathesis; Nickel catalyst; MCM-41; Equilibrium adsorption
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Preparation of Ni-MCM-41 by equilibrium adsorption — Catalytic evaluation for the direct conversion of ethene to propene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 5, 5 January 2011, Pages 368–374
Authors
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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
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Full-text PDF Download
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