IR study on selective hydrogenation of 1,3-butadiene on transition metal nitrides: 1,3-Butadiene and 1-butene adsorption on Mo2N/γ-Al2O3 catalyst

Zili Wu, Zhixian Hao, Pinliang Ying, Can Li, Qin Xin

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

The surface species formed from the adsorption of 1,3-butadiene and 1-butene on Mo2N/γ-Al2O3 catalyst have been characterized by in situ FT-IR spectroscopy with an attempt to get insight into the selective hydrogenation of 1,3-butadiene on transition metal nitride catalysts. 1,3-Butadiene adsorption on the Mo2N/γ-Al2O3 catalyst forms several kinds of chemisorbed surface species: π-adsorbed butadiene (πs and πd); σ-bonded species; dehydrogenated species. πs- and σ-bonded butene species are present on the surface for 1-butene adsorption and reaction on the nitride catalyst. The presence of the πd-adsorbed butadiene significantly prevents 1-butene from its adsorption, further hydrogenation, and isomerization on the nitrided catalyst, accordingly resulting in high selectivity in the hydrogenation of 1,3-butadiene to 1-butene. The surface nitrogen atoms weaken the interaction between 1,3-butadiene and the catalyst surface, and result in the high selectivity in the hydrogenation of 1,3-butadiene to 1-butene.

Original languageEnglish
Pages (from-to)12275-12281
Number of pages7
JournalJournal of Physical Chemistry B
Volume104
Issue number51
DOIs
StatePublished - Dec 2000
Externally publishedYes

Fingerprint

Dive into the research topics of 'IR study on selective hydrogenation of 1,3-butadiene on transition metal nitrides: 1,3-Butadiene and 1-butene adsorption on Mo2N/γ-Al2O3 catalyst'. Together they form a unique fingerprint.

Cite this