申请人:Park Sik Hong
公开号:US20050014964A1
公开(公告)日:2005-01-20
The present invention is related to a method of producing polycarbosilane by heating polydimethylsilane at low pressure within the range of 320˜450° C. using zeolite having the Si/Al or Si/B ratio of 1˜200 as catalyst. This invention uses a zeolite with the structure of ZSM-5, ZSM-11, ZSM-12, zeolite X and zeolite Y, which has the Si/Al or Si/B ratio of 1˜200, as catalyst. When polycarbosilane is produced using a specific zeolite as catalyst, Si/Al or Si/B ratio can be adjusted at any proportion, enabling acidity control of catalyst, and therefore the molecular weight of final products can be easily controlled and the product yield can be improved, compared to conventional solid acid catalysts.
本发明涉及一种通过在低压下使用具有Si/Al或Si/B比为1-200的沸石作为催化剂,在320~450℃范围内加热聚二甲基硅烷以生产聚碳硅烷的方法。本发明使用具有ZSM-5、ZSM-11、ZSM-12、沸石X和沸石Y结构的沸石作为催化剂,其Si/Al或Si/B比为1-200。当使用特定的沸石作为催化剂生产聚碳硅烷时,Si/Al或Si/B比可以按任意比例调整,从而实现催化剂的酸度控制,因此可以轻松控制最终产品的分子量并提高产品产量,相比传统的固体酸催化剂而言。