Acetylene as a reducing agent for the selective catalytic reduction (C2H2-SCR) of NO in the presence of excess oxygen on various Ce-exchanged zeolites was investigated for the first time. Under the conditions of 1600 ppm NO, 800 ppm C2H2, and 9.95% O-2 in He, the Ce-H-ZSM-5 (Si/Al = 25) catalyst shows about 83% NO conversion to N-2 at the temperatures ranged from 300 to 350 degrees C. It is followed by the other zeolites in the activity order of Ce-H-Y (Si/Al = 2.5), Ce-H-_ (Si/Al = 20 similar to 30), and Ce-H-SAPO (Si/Al = 34), Ce-H-5A (Si/Al = 12). Almost no NO conversion was obtained over Ce-Na-ZSM-5 (Si/Al = 25) and Na-ZSM-5 (Si/Al = 25) catalyst samples. The Conversion of NO to N2 increased with O2 concentration in the range of 0.1 similar to 9.95% over the CeH-ZSM-5 (Si/Al = 25) catalyst. It is suggested that O-2 plays an important role in the C2H2-SCR of NO reaction, by oxidizing NO to NO2 on acid sites in assistant with cerium species of the catalyst. A large amount of CO, which seems to be in proportion with the NO conversion to N2, was produced. Long-term experiments up to 56 h combined with a excursion of the reaction temperature up to 650 degrees C over the Ce-H-ZSM-5 (Si/Al = 25) confirmed the catalyst's durable performance under the reaction conditions. It is found that the de-NOx activity of Ce-H-ZSM-5 catalyst can be enhanced by the presence of 50 ppm of sulfur dioxide in the dry-feed reaction conditions.