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Imidazole and nickel (II) modified SAPO-34 was synthesized according to the mass ratio of aluminum isopropoxide: phosphoric acid: silica sol: tetraethylammonium hydroxide : water : modified agents = 1.0 : 0.8 : 0.6 : 2 : 52 : 0.01. Specified amount of aluminum isopropoxide was mixed with distilled water and phosphoric acid was added to present the white homogenous gel. Tetraethylammonium hydroxide was Also mixed with specified amount of silica sol to form homogenous solution. The homogenous solution was added to the white homogenous gel. After stirring at 30℃ for 4 h, specified amount of imidazole and nickel nitrate (mole ratio = 1 : 1) was added in and kept at 60℃ with a constant stirring speed for 8 h to result in a semi-transparent homogenous white gel. The white gel was transferred into a high-pressure stainless steel autoclave and maintained at 200℃ for 24 h without stirring. As precipitate was recovered from the autoclave, it was dried at 120℃ for 12 h and calcined at 550℃ for 6 h to acquire imidazole and nickel modified SAPO-34. It was characterized by means of N 2 adsorption/desorption, X-ray powder diffraction (XRD), scanning electronic microscopy (SEM), and energy dispersive spectroscopy (EDS). The modified SAPO-34 was mechanically mixed with CuO-ZnO-Al 2 O 3 prepared by co-precipitation process to form