Purdue Research Foundation

Iowa State University Research Foundation, Inc.

Zhenwei Wu

Jeffrey T Miller

Nicole J Libretto

Evan C Wegener

Stephen Purdy

Yue Wu

Fabio Henrique Ribeiro

Zhe Li

Yanran Cui

Garrett Mitchell

A novel catalyst composition and its use in the dehydrogenation of alkanes to olefins. The catalyst comprises a Group VIII noble metal and a metal selected from the group consisting of manganese, vanadium, chromium, titanium, and combinations thereof, on a support. The Group VIII noble metal can be platinum, palladium, osmium, rhodium, rubidium, iridium, and combinations thereof. The support can be silicon dioxide, titanium dioxide, aluminum oxide, silica-alumina, cerium dioxide, zirconium dioxide, magnesium oxide, metal modified silica, silica-pillared clays, silica-pillared micas, metal oxide modified silica-pillared mica, silica-pillared tetrasilicic mica, silica-pillared taeniolite, zeolite, molecular sieve, and combinations thereof. The catalyst composition is an active and selective catalyst for the catalytic dehydrogenation of alkanes to olefins.

Catalyst for dehydrogenation of light alkanes

Metal-support interaction offers electronic, geometrical and compositional effects to tune and maneuver catalytically active sites. Here we report the first example of a reactive metal support interaction (RMSI) between Pt and various MXenes, which are two-dimensional (2D) metal carbides, nitrides, or carbonitrides. The invention thus provides intermetallic Pt/MXene nanoparticle catalysts comprising platinum and MXene moieties. PtTi and PtNb intermetallic nanoparticle catalysts were prepared by RMSI of Pt nanoparticles supported on TiCand NbC MXenes. The intermetallic structures were verified by XAS, ARSTEM, and XPS. Experimental analysis showed that the extent of alloy formation is temperature dependent. Kinetics analysis revealed that in contrast to Pt/AlO, Pt supported by NbCTexhibits weaker CO adsorption and the alloy-MXene interface shows enhanced ability of HO dissociation for a water gas shift (WGS) reaction at 300&#xb0; C. The catalysts also show improved selectivity and stability for alkane dehydrogenation compared to Pt.

Two-dimensional metal carbide catalyst

Growing community of inventors

West Lafayette, IN, United States of America

Zhenwei Wu