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Promoters are ubiquitous in heterogeneous catalysis. The great majority of catalysts developed for commercial use are modified by promoters to enhance the yield of the desired product. Here, we report an investigation of the promotion effect using near ambient pressure X-ray photoelectron spectroscopy, whereby we directly observe a promoter modifying the active sites of a working catalyst. For a silver...
Single-phase samples of the intermetallic compound ZnPd, all possessing the CuAu type of crystal structure, were prepared with different bulk compositions and characterized by ICP-OES and XRD. Catalytic experiments in methanol steam reforming in a flow reactor on the unsupported intermetallic compounds proved that Pd-rich catalysts showed limited activity and very low selectivity to CO 2 ,...
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