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We report the synthesis, characterization, and catalytic performance for gas phase propane dehydrogenation of single-site Co2+ ions supported on silica. Spectroscopic characterization by resonance Raman, electron paramagnetic resonance, and X-ray near-edge and extended absorption fine structure revealed that tetrahedrally coordinated Co2+ ions are chemisorbed into the trisiloxane rings on the surface...
The effect of potassium (K) loading on ceria-supported nickel (Ni/xK/CeO2) catalysts on the water–gas shift reaction has been investigated. An optimum loading of 5wt.% K was found to enhance the catalytic performance in terms of activity and selectivity. As evidenced by DRIFTS, the methane-suppressing effect of K is attributed to inhibition of the formation of nickel subcarbonyl species through interaction...
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