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Citation: Zhong Shun-He, Chen Song-Zhe, Xin Xiu-Lan. Laser Stimulated Surface Reaction of C₂H₄ on Nickel Sulfate[J]. Acta Physico-Chimica Sinica, ;2001, 17(10): 936-939. doi: 10.3866/PKU.WHXB20011014 shu

Laser Stimulated Surface Reaction of C₂H₄ on Nickel Sulfate

1.
College of Chemical Engineering and Technology, Tianjin University,Tianjin　300072

Received Date: 22 March 2001
Available Online: 15 October 2001

Solid material NiSO4 was prepared. A TEACO2 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 C2H4adNiSO4 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 C2H4adNiSO4. 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.
- Laser stimulated surface reaction;Solid material;Nickel sulfate;　Ethylene;Butadiene
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Laser Stimulated Surface Reaction of C2H4 on Nickel Sulfate

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Laser Stimulated Surface Reaction of C₂H₄ on Nickel Sulfate