宝鸡文理学院学报(自然科学版)
寶鷄文理學院學報(自然科學版)
보계문이학원학보(자연과학판)
JOURNAL OF BAOJI COLLEGE OF ARTS AND SCIENCE (NATURAL SCIENCE)
2007年
3期
198-202,205
,共6页
4-甲基-2-苯基-13-二氧戊烷%硅钨酸%聚苯胺%催化
4-甲基-2-苯基-13-二氧戊烷%硅鎢痠%聚苯胺%催化
4-갑기-2-분기-13-이양무완%규오산%취분알%최화
4-methyl-2-phenyl-1,3-dioxolane%12-tungstosilicic acid%polyaniline%catalyst
目的 自制H4SiW12O40(硅钨酸)-PAn(聚苯胺)环境友好催化剂并进行有机物合成应用研究.方法 通过FT-IR,XRD和TG/DTA手段对自制催化剂进行表征,以苯甲醛和1,2-丙二醇为原料合成4-甲基-2-苯基-1,3-二氧戊烷,探讨H4SiW12O40-PAn催化剂对缩醛反应的催化活性,较系统地研究了原料量比,催化剂用量,反应时间诸因素对产品收率的影响.结果 在n(苯甲醛)/n(1,2-丙二醇)=1/2.0,催化剂用量为反应物料总质量的0.5%,环己烷为带水剂,反应时间45 min的优化条件下,4-甲基-2-苯基-1,3-二氧戊烷的收率可达87.4%.结论 实验结果表明,H4SiW12O40-PAn是合成苯甲醛1,2-丙二醇缩醛的良好催化剂.
目的 自製H4SiW12O40(硅鎢痠)-PAn(聚苯胺)環境友好催化劑併進行有機物閤成應用研究.方法 通過FT-IR,XRD和TG/DTA手段對自製催化劑進行錶徵,以苯甲醛和1,2-丙二醇為原料閤成4-甲基-2-苯基-1,3-二氧戊烷,探討H4SiW12O40-PAn催化劑對縮醛反應的催化活性,較繫統地研究瞭原料量比,催化劑用量,反應時間諸因素對產品收率的影響.結果 在n(苯甲醛)/n(1,2-丙二醇)=1/2.0,催化劑用量為反應物料總質量的0.5%,環己烷為帶水劑,反應時間45 min的優化條件下,4-甲基-2-苯基-1,3-二氧戊烷的收率可達87.4%.結論 實驗結果錶明,H4SiW12O40-PAn是閤成苯甲醛1,2-丙二醇縮醛的良好催化劑.
목적 자제H4SiW12O40(규오산)-PAn(취분알)배경우호최화제병진행유궤물합성응용연구.방법 통과FT-IR,XRD화TG/DTA수단대자제최화제진행표정,이분갑철화1,2-병이순위원료합성4-갑기-2-분기-1,3-이양무완,탐토H4SiW12O40-PAn최화제대축철반응적최화활성,교계통지연구료원료량비,최화제용량,반응시간제인소대산품수솔적영향.결과 재n(분갑철)/n(1,2-병이순)=1/2.0,최화제용량위반응물료총질량적0.5%,배기완위대수제,반응시간45 min적우화조건하,4-갑기-2-분기-1,3-이양무완적수솔가체87.4%.결론 실험결과표명,H4SiW12O40-PAn시합성분갑철1,2-병이순축철적량호최화제.
Aim To prepare a new environmental friendly catalyst, H4SiW12O40-PAn and it is used to organic synthesis reactions. Method FT-IR, XRD and TG/DTA were used to identify the new environmental friendly catalyst, then it was used to the catalytic synthesis reaction of 4-methyl-2-phenyl-1, 3-dioxolane from benzaldehyde and 1, 2-propanediol. The factors influencing the synthesis were discussed and the best conditions were found out. Results The optimum conditions are: molar stocks, and the reaction time is 45 min and its yield can reach 87.4 %. Conclusion H4SiW12O40-PAn is an excellent catalyst for synthesizing 4-methyl-2-phenyl-1, 3-dioxolane.