n-Heptane hydroconversion over sulfated-zirconia-supported molybdenum carbide catalystsReport as inadecuate

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Applied Petrochemical Research

, Volume 6, Issue 4, pp 341–352

First Online: 19 October 2016Received: 25 April 2016Accepted: 03 October 2016


Molybdenum carbide on sulfated zirconia was prepared by impregnation of MoO3 on sulfated zirconia to give a loading of 5 wt% followed by carburisation at 923 K in a mixture of CH4-H2 4:1. The resulting catalyst was characterised by N2 adsorption–desorption, CO chemisorption, FTIR of pyridine adsorption, XRD, TPR, TGA, Raman and SEM–EDX. This combination of characterisation studies suggests formation of a well-dispersed Mo2C phase over tetragonal zirconia. When employed in the hydroconversion of n-heptane, high temperature and low space velocity lead to substantial cracking. However, under some conditions, an increase in the research octane number RON from 0 n-heptane to ca. 50 was attained. Between 723 and 873 K, n-heptane is mainly cracked to iso-pentane and ethane. The product distribution as a function of conversion suggests that the reaction did not simply follow a consecutive reaction pathway, but that other parallel routes were involved.

KeywordsMolybdenum carbide Sulfated zirconia n-heptane Cracking Isomerisation  Download fulltext PDF

Author: F. F. Oloye - A. J. McCue - J. A. Anderson

Source: https://link.springer.com/

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