TY - JOUR
T1 - IR study on selective hydrogenation of 1,3-butadiene on transition metal nitrides
T2 - 1,3-Butadiene and 1-butene adsorption on Mo2N/γ-Al2O3 catalyst
AU - Wu, Zili
AU - Hao, Zhixian
AU - Ying, Pinliang
AU - Li, Can
AU - Xin, Qin
PY - 2000/12
Y1 - 2000/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0034505037&partnerID=8YFLogxK
U2 - 10.1021/jp002488w
DO - 10.1021/jp002488w
M3 - Article
AN - SCOPUS:0034505037
SN - 1089-5647
VL - 104
SP - 12275
EP - 12281
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
IS - 51
ER -