Selective Hydrogenation of Acetylene over Pd/Fiberglass Catalysts: Kinetic and Isotopic Studies | Sciact - CRIS-system of Boreskov Institute of Catalysis

Selective Hydrogenation of Acetylene over Pd/Fiberglass Catalysts: Kinetic and Isotopic Studies Full article

Journal

Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875

Output data

Year: 2015, Volume: 506, Pages: 197-205 Pages count : 9 DOI: 10.1016/j.apcata.2015.09.016

Tags

13-C Labeling, Fiberglass catalyst, Kinetics, Palladium nanoparticles, Selective acetylene hydrogenation

Authors

Gulyaeva Yuliya K. ¹ , Kaichev Vasily V. ^1,2 , Zaikovskii Vladimir I. ^1,2 , Suknev Alexey P. ¹ , Balʹzhinimaev Bair S. ¹

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Lavrentieva Ave. 5, 630090 Novosibirsk, Russia
2	Novosibirsk State University, Pirogova Str. 2, 630090 Novosibirsk, Russia

In this study two palladium fiberglass catalysts differing in the location of Pd particles have been synthesized and characterized in detail by means of XPS and HRTEM/STEM. In the first catalyst prepared using H2PdCl4 as a precursor palladium deposits on the external surface of glass fibers, whereas in the second catalyst prepared using ion exchange of [Pd(NH3)4]2+ cations with the glass protons palladium is located in the subsurface layers of glass. It was clearly shown by SSITKA (steady-state isotopic transient kinetic analysis) with the use of doubly labeled acetylene 13C2H2 that gas-phase ethylene is not involved in the selective hydrogenation of acetylene over the second catalyst in contrast to the first one where ethylene is also hydrogenated into ethane. This fact was explained by an ability of glass to absorb predominantly such readily polarizable molecules like acetylene, but not ethylene. As a result, the fiberglass catalyst where Pd clusters are confined in the glass matrix demonstrates high selectivity (ethylene increment ca. 60%) at complete conversion of acetylene. So, Pd fiberglass catalysts were shown to be very promising for the selective hydrogenation processes.

Gulyaeva Y.K. , Kaichev V.V. , Zaikovskii V.I. , Suknev A.P. , Balʹzhinimaev B.S.
Selective Hydrogenation of Acetylene over Pd/Fiberglass Catalysts: Kinetic and Isotopic Studies
Applied Catalysis A: General. 2015. V.506. P.197-205. DOI: 10.1016/j.apcata.2015.09.016 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Jun 25, 2015
Accepted:	Sep 10, 2015
Published online:	Sep 12, 2015
Published print:	Oct 1, 2015

Web of science:	WOS:000364886500023
Scopus:	2-s2.0-84941985170
Elibrary:	24950073
Chemical Abstracts:	2015:1531838
Chemical Abstracts (print):	163:504953
OpenAlex:	W1745925844

DB	Citing
Web of science	17
Scopus	20
Elibrary	18
OpenAlex	22