Acta Phys. -Chim. Sin. ›› 2001, Vol. 17 ›› Issue (10): 936-939.doi: 10.3866/PKU.WHXB20011014
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Zhong Shun-He;Chen Song-Zhe;Xin Xiu-Lan
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Abstract: Solid material NiSO4 was prepared. A TEACO2 laser generator was adopted as the light source to carry on laser stimulated surface coupling reaction of ethylene. The infrared vibration structure and adsorption state of C2H4adNiSO4 system were discussed based on infrared and temperature programmed desorption tests. It was showed that C2H4 is adsorbed as molecular state, bonding with NiSO4 surface through H atom at terminal O of S=O. The 1 079 cm-1 laser was selected to activate solid surfacial bond S=O, which absorbs the photon energy efficiently. At normal pressure and a temperature below 100 ℃, C2H4 conversed to butadiene with a high selectivity of 100%. Increasing laser pulse can improve conversion of C2H4 without change of selectivity. After 200 pulses, C2H4 in the system had been consumed to a large extent, and the product occupied most of the surface active sites, therefore conversion of C2H4 increased at a low speed. Temperature can also affect the laser stimulated surface reaction of C2H4adNiSO4. At 100 ℃, 15.1% of C2H4 convert to butadiene, while keeping high selectivity of 100%. Based on the above experimental results, a mechanism of LSSR was proposed for the conversion of C2H4 to C4H6.
Key words: Laser stimulated surface reaction, Solid material, Nickel sulfate, Ethylene, Butadiene
Zhong Shun-He;Chen Song-Zhe;Xin Xiu-Lan. Laser Stimulated Surface Reaction of C2H4 on Nickel Sulfate[J].Acta Phys. -Chim. Sin., 2001, 17(10): 936-939.
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URL: http://www.whxb.pku.edu.cn/EN/10.3866/PKU.WHXB20011014
http://www.whxb.pku.edu.cn/EN/Y2001/V17/I10/936
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