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固体超强酸ZrO2-SO42-催化合成核黄素四乙酸酯
引用本文:赵景联,杨永刚.固体超强酸ZrO2-SO42-催化合成核黄素四乙酸酯[J].精细化工,1999,16(2):13-16.
作者姓名:赵景联  杨永刚
作者单位:西安交通大学化学工程学院精细化工系,陕西,西安,710049
基金项目:西安交通大学理科基础研究基金!(9707)
摘    要:对固体超强酸ZrO_2-SO_4~(2-)催化合成核黄素四乙酸酯进行了研究。核黄素与乙酸酐摩尔比1:40,催化剂用量为反应物总质量的8.0%,反应温度80℃,反应时间2.5h,核黄素四乙酸酯产率可达76.9%。ZrO_2SO_4~ ̄(2-)催化活性高于TiO_2-SO_4~(2-)和Fe_2O_3-,SO_4~(2-)ZrO_2在1mol/LH_2 SO_4中浸渍 24h,600℃焙烧 3h催化活性最高。

关 键 词:核黄素四乙酸酯  固体超强酸  催化剂

Synthesis of Riboflavin Tetraacetate by Solid Superacid ZrO2-SO42-
ZHAO Jing-lian,YANG Yong-gang.Synthesis of Riboflavin Tetraacetate by Solid Superacid ZrO2-SO42-[J].Fine Chemicals,1999,16(2):13-16.
Authors:ZHAO Jing-lian  YANG Yong-gang
Abstract:The riboflavin tetraacetate was synthesized starting from riboflavin and acetic anhydride, and the solid superacid ZrO_2- SO_4~(2-) as catalyst. The yield of riboflavin tetraacetate reached up to 76. 9% by slowly adding 0. 01mol (3. 76g) riboflavin to 4g (8% of system loud mass) solid superacid ZrO_2 - SO_4~(2-) in 0. 4mol (40. 8g) acetic anhydride and stirring for 2. 5 hours at 80. The solid superacid catalyst ZrO_2 - SO_4~(2-) was synthesized by adding 4. 0g ZrO_2 to 30ml 1mol/L H_2SO_4, immersing 24 hours at 30, baking 3 hours at 600.
Keywords:riboflavin tetuaacetate  solid superacid  catalyst  
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