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OALib Journal期刊
ISSN: 2333-9721
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p/hzsm5分子筛催化乙醇脱水制备乙烯
, PP. 24-29
Keywords: 乙醇,脱水,乙烯,hzsm5,磷酸
Abstract:
？采用浸渍法制备一系列p/hzsm5分子筛催化剂,考察p含量对乙醇脱水制备乙烯的影响,并以x线衍射（xrd）、n2吸附脱附（bet）、27al核磁共振（27almasnmr）等表征手段研究了p物种对hzsm5分子筛结构和酸性质的影响。结果表明:h3po4的添加会在某种程度上促进骨架四面体al原子的脱离,从而有效地降低催化剂酸强度,进而减弱了催化剂的活性,但有利于延长使用寿命。结合nh3tpd表征结果，p的添加量控制在20%比较合适。
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