Selective Hydrogenation of Concentrated Vinyl Acetylene Mixed C4 by Modified Pd Catalysts: Effect of Cu
Open Access
Abstract
The Pd and Pd-Cu on alumina catalysts were tested for hydrogenation of vinyl acetylene in mixed C4 in a circulating tubular reactor. The results showed that adding proper amounts of Cu improved the reaction activity, but inhibited 1,3-butadiene selectivity. Moreover, the presence of Cu retarded the carbon deposition on catalysts during the reaction. Temperature programmed oxidation (TPO), Temperature programmed reduction (TPR), H2 chemisorption, and X-ray photoelectron spectroscopy (XPS) were utilized to characterize the catalysts. The characterization suggested both geometric and electronic modifications.Keywords
This publication has 24 references indexed in Scilit:
- Performance of Cu-promoted Pd catalysts prepared by adding Cu using a surface redox method in acetylene hydrogenationApplied Catalysis A: General, 2011
- Performance and regeneration studies of Pd–Ag/Al2O3 catalysts for the selective hydrogenation of acetyleneApplied Catalysis A: General, 2011
- Supported nitrogen-modified Pd nanoparticles for the selective hydrogenation of 1-hexyneJournal of Catalysis, 2011
- Hept-1-yne partial hydrogenation reaction over supported Pd and W catalystsApplied Catalysis A: General, 2011
- Alkyne hydrogenation over Pd catalysts: A new paradigmJournal of Catalysis, 2006
- Propyne hydrogenation over alumina-supported palladium and platinum catalystsApplied Catalysis A: General, 2003
- Characterization of Pumice-Supported Ag–Pd and Cu–Pd Bimetallic Catalysts by X-Ray Photoelectron Spectroscopy and X-Ray DiffractionJournal of Catalysis, 1999
- Catalyst research — One of the cornerstones of modern chemical productionCatalysis Today, 1996
- Selective hydrogenation of C4-alkynes over a copper on silica catalystApplied Catalysis A: General, 1994
- Effect of Pd/C dispersion on its catalytic properties in acetylene and vinylacetylene hydrogenationApplied Catalysis, 1989