Nb-SBA-15催化合成2,4-二叔丁基苯酚

摘要以介孔分子筛SBA-15为载体,采用浸渍法合成了Nb-SBA-15催化剂。通过XRD、BET和TG/DTA测试手段对样品进行了分析。以甲基叔丁基醚和苯酚为原料,研究了Nb-SBA-15在合成2,4-二叔丁基苯酚的反应中的催化活性,考察了反应条件对反应结果的影响。试验结果表明,Nb-SBA-15具有较好的催化活性和稳定性。适宜的烷基化反应条件为:Nb的负载量为15%(质量分数,以Nb2O5计),反应温度为160℃,甲基叔丁基醚(MTBE)与苯酚的摩尔比为2.0,反应时间为4.0h,催化剂用量为原料质量的4.55%。

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	李春晶
	李剑
	沈健
	张亮

关键词：介孔分子筛 Nb-SBA-15 烷基化反应 2 4-二叔丁基苯酚

Abstract： Nb-SBA-15 catalyst was synthesized by the impregnation method with mesoporous sieve SBA-15 as carrier. The samples were characterized by XRD, BET and TG/DTA. Nb-SBA-15 catalyst and its catalytic activity in the synthesis of 2, 4-di-tert-butylphenol were studied. The alkylation reaction condition was analyzed. The experimental results indicated that, Nb-SBA-15 has better catalytic activity and better stability in the reaction of 2,4-di-tert-butylphenol. The optimum alkylation reaction conditions are as follows: the load capacity of Nb 15%,reaction temperature 160 ℃, mole ratio of MTBE and phenol 2∶1, reaction time 4.0 h, catalyst is 4.55% for raw material.

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Received 2010-01-15; published 2010-01-15

引用本文:

李春晶;李剑;沈健;张亮;.Nb-SBA-15催化合成2,4-二叔丁基苯酚[J]. 化学工业与工程, 2010,27(1): 11-16

LI Chun-jing, LI Jian, SHEN Jian, ZHANG Liang.Catalytic Synthesis of 2,4-Di-tert-butylphenol by Nb-SBA-15[J]. Chemcial Industry and Engineering, 2010,27(1): 11-16

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