In order to lay a foundation for effective regeneration of P W heteropoly acid catalyst supported on SiO 2 aged in the alkylation of isobutane with butene, the molecular structure and physicochemical properties of coke precursor deposited on the surface of solid acid alkylation catalyst are clearly recognized and identified by means of various characterization approaches, including IR, NMR, GC MS and GC. According to the characterization results, the coke precursors are mainly made up of long chain satu...
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