NOVELTY - Catalyst (I) for producing a liquefied petroleum gas, which is used for producing a liquefied petroleum gas containing propane or butane as a main component by reacting methanol and/or dimethyl ether with hydrogen, comprises a palladium- and/or platinum-based catalyst component (A) in which palladium- and/or platinum is supported on a support; and a USY-type zeolite.    USE - (I) is useful for producing a liquefied petroleum gas, which is useful for producing a liquefied petroleum gas containing propane or butane as a main component (claimed).    ADVANTAGE - (I) provides a liquefied petroleum gas with high activity, high selectivity and high yield; and without producing by-product (carbon dioxide). The preparation of a liquefied petroleum gas is economical.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for processes for producing a liquefied petroleum gas, comprising:    (A) reacting methanol and/or dimethyl ether with hydrogen in the presence of (I), where the liquefied petroleum gas product containing propane or butane as a main component; or    (B) producing methanol where a synthesis gas is passed through a catalyst layer comprising a methanol synthesis catalyst, where the reactant gas product containing methanol and hydrogen; and producing a liquefied petroleum gas where the reactant gas produced in the step of producing methanol is passed through a catalyst layer comprising (I); or    (C) producing dimethyl ether where the synthesis gas is passed through a catalyst layer comprising a methanol synthesis catalyst and a methanol dehydration catalyst, where the reactant gas product containing dimethyl ether and hydrogen; and producing a liquefied petroleum gas, where the reactant gas produced in the step of producing dimethyl ether is passed through a catalyst layer comprising (I); or    (D) producing a synthesis gas from a carbon containing starting material and water, oxygen and/or carbon dioxide; producing methanol where the synthesis gas is passed through a catalyst layer comprising a methanol synthesis catalyst, where the reactant gas product containing methanol and hydrogen; and producing a liquefied petroleum gas where the reactant gas produced in the step of producing methanol is passed through a catalyst layer comprising (I); or    (E) producing a synthesis gas from a carbon containing starting material and water, oxygen and/or carbon dioxide; producing dimethyl ether where the synthesis gas is passed through a catalyst layer comprising a methanol synthesis catalyst and a methanol dehydration catalyst, where the reactant gas product containing dimethyl ether and hydrogen; and producing a liquefied petroleum gas where the reactant gas produced in the step of producing dimethyl ether is passed through a catalyst layer comprising (I).