引用本文:
钟顺和, 陈崧哲, 辛秀兰. 激光促进乙烯在磷酸铁上的表面反应[J]. 应用化学,
2002, 19(1): 15-17.
Citation: ZHONG Shun-He, CHEN Song-Zhe, XIN Xiu-Lan. Laser Stimulated Surface Reaction of C2H4 on FePO4[J]. Chinese Journal of Applied Chemistry, 2002, 19(1): 15-17.
Citation: ZHONG Shun-He, CHEN Song-Zhe, XIN Xiu-Lan. Laser Stimulated Surface Reaction of C2H4 on FePO4[J]. Chinese Journal of Applied Chemistry, 2002, 19(1): 15-17.
激光促进乙烯在磷酸铁上的表面反应
English
Laser Stimulated Surface Reaction of C2H4 on FePO4
Abstract:
Solid FePO4 was prepared by precipitation method. A TEA-CO2 laser generator was adopted as light source to carry out laser stimulated surface reaction(LSSR) of ethylene. The vibration structure and adsorption state of C2H4ad-FePO4 system were discussed based on the infrared and temperature programmed desorption results. It is showed that C2H4 is adsorbed in a molecular state by H atom bonding with terminal O of P=O in FePO4 surface. 1 079 cm-1 laser was selected to activate solid surfacial bond P=O, which absorbs the photon energy efficiently. At atmospheric pressure and <100℃, after 100 laser pulses C2H4 conversed to butadiene with 100% selectivity. Increasing laser pulse can improve conversion of C2H4 without change of selectivity. After 200 pulses, C2H4 in the system was consumed in a high level and the product occupied most active sites on the surface, impeding further conversion of C2H4. A mechanism of LSSR has been proposed for the conversion of ethylene to butadiene.
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Key words:
- laser stimulated surface reaction
- / iron phosphate
- / ethylene
- / butadiene
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