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以纤维素为原料、苯甲酰氯为酯化剂的条件下合成了纤维素苯甲酸酯(CB),通过控制苯甲酰氯的量得到了不同取代度的CB,且不同取代度的CB在苯、环己烯和环己烷中的溶胀度不同.将CB与正丁醇还原得到的单分散Ru纳米簇进行杂化后得到Ru/CB杂化膜,并将其用于催化苯选择加氢反应.利用傅立叶转换红外光谱仪,X-射线光电子能谱,X-射线衍射和透射电子显微镜对不同取代度的CB和杂化膜的结构与性能进行了表征.研究发现,杂化膜的溶胀度是影响苯的转化率和环己烯选择性的重要因素.活性评价结果表明,苯的转化率随着取代度的增大而增大,最高为2.8%;环己烯的选择性随取代度的增大而减小,最高为53.4%.
Cellulose benzoate (CB) was synthesized by using cellulose as raw material and benzoyl chloride as esterification agent. CB with different degree of substitution was obtained by controlling the amount of benzoyl chloride. CB with different degree of substitution Benzene, cyclohexene and cyclohexane.When the monodispersed Ru nanoclusters obtained by the reduction of CB and n-butanol were hybridized, the Ru / CB hybrid membranes were obtained and used to catalyze the benzene selective addition Hydrogen reaction.The structures and properties of CB and hybrid membranes with different degrees of substitution were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction and transmission electron microscopy.The results showed that the swelling Degree is an important factor affecting the conversion of benzene and the selectivity of cyclohexene.The activity evaluation results show that the conversion of benzene increases with the degree of substitution, up to 2.8%; the selectivity of cyclohexene with the substitution Degree increases and decreases, up to 53.4%.