Direct synthesis of liquefied petroleum gas from syngas over hybrid catalyst

Direct synthesis of liquefied petroleum gas (LPG) from syngas could be realized over a hybrid catalyst consisting of methanol synthesis catalyst and zeolite. In this work, SAPO-5 was chosen consciously for LPG synthesis, because its pore size (0.73 nm×0.73 nm) is similar to that of Y zeolite. As expected, the corresponding hybrid catalyst of SAPO-5 exhibits high selectivity (73.0%) to LPG, which confirms the previous deduction that large pore size of zeolite was beneficial to LPG synthesis. In addition, as one step process of syngas to LPG, the formation of hydrocarbons from methanol or dimethyl ether follows the hydrocarbon pool mechanism.