甲基丙烯醛与H_(4)PMo_(11)V_(1)/SiO_(2)催化剂相互作用的红外光谱研究  

Infrared Study on Interaction Between Methacrolein and Catalyst H_(4)PMo_(11)V_(1)/SiO_(2)

作　　者：吴通好[1] 杨洪茂[1] 王国甲[1] Wu Tonghao;Yang Hongmao;Want Guojia(Deportment of Chemistry,Jilin University,Changchun)

机构地区：[1]吉林大学化学系

出　　处：《高等学校化学学报》1987年第7期635-639,共5页Chemical Journal of Chinese Universities

摘　　要：本文报告了甲基丙烯醛(MAL)在杂多酸催化剂H_(4)PMo_(11)V_(1)/SiO_(3)上吸附的红外光谱研究结果。在表面上生成了三种表面络合物,CH_(2)=C(CH_(3))-CHO*(Ⅰ)、CH_(2)=C(CH_(3))-CO(Ⅱ)和CH_(2)=C(CH_(3))-C■O*O*(Ⅲ)。认为它们是生成甲基丙烯酸(MAA)的中间物。发现在较高温度(300℃)抽空处理的催化剂上不发生MAL的化学吸附,同时表征杂多酸阴离子结构的v(P-O)和一个v(Me-O-Me,Me代表Mo或V)谱带也消失了。In this paper,we reported the result of infrared study about methacrolein(MAL)adsorption on heteropoly acid catalyst,H_(4)PMo_(11)V_(1)/SiO_(2).The three surface species CH_(2)=C(CH_(3))-CHO*(Ⅰ),CH_(2)=C(CH_(3))-CO(Ⅱ),CH_(2)=C(CH_(3))-C■O*O*(Ⅲ)were formed on the catalyst surface.We considerthat they are the intermediate compounds of methacrylic acid(MAA)to form.It was found that at 300℃ MAL chemisorption did not occur on the catalyst under the evacuating condition.v_(P-O) and v_(Me-O-Me) bands,characterizing the heteropoly acid anion structure,disappeared.

关 键 词：甲基丙烯醛 甲基丙烯酸 杂多酸催化剂 红外光谱研究 表面络合物 化学吸附 中间物 (Ⅱ) 

分 类 号：TQ2[化学工程—有机化工]