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- W1490249946 abstract "The low-temperature (20°C) deactivation by coke of zeolite-supported nickel catalysts was studied. Using the hydrogenation of phenylacetylene as a model reaction, channel dimension was found to affect both the loss of catalyst activity and the distribution of nickel particles on the active surface; activity was found to decrease in the following order: ZSM5>HUSY>Hmordenite. Selectivity curves as well as temperature-programmed reduction runs show that the majority (95%) of the nickel particles is deposited on the outside of the channel network of HZSM5 support while for Hmordenite and HUSY supports the majority of the nickel is found inside the channels. In spite of coke being formed at low reaction temperature, temperatures as high as 790°C were required for its removal. Both Hmordenite and HZSM5 also contained substantial quantities of reactive coke that burned at lower temperature, while the HUSY contained substantial quantities of high-temperature coke." @default.
- W1490249946 created "2016-06-24" @default.
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- W1490249946 date "1997-01-01" @default.
- W1490249946 modified "2023-09-25" @default.
- W1490249946 title "Influence of the support on the deactivation of nickel zeolite catalysts during the conversion of phenylacetylene" @default.
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- W1490249946 doi "https://doi.org/10.1016/s0167-2991(97)80146-2" @default.
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