The present invention relates to a catalyst system including, as a main component, indium phosphate used for manufacturing acrolein from glycerol; and a method for manufacturing acrolein using the same. The catalyst system according to the present invention includes a catalytic component represented by general formula 1: general formula 1 InPO_a, wherein the molar ratio of In : P is 1 : 1 to 3, and a represents the amount of oxygen combined with the other elements and corresponds to an oxidative status thereof.
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