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超临界CO2条件下中孔分子筛催化松香聚合反应的研究
  • ISSN号:0253-2417
  • 期刊名称:《林产化学与工业》
  • 时间:0
  • 分类:TQ315.471[化学工程—高聚物工业]
  • 作者机构:[1]青岛科技大学化工学院,山东青岛266042
  • 相关基金:国家自然科学基金资助项目(30371137)
中文摘要:

采用水热合成法制得BO3^3-/ZrO2/Mo-MCM-41中孔分子筛。用XRD、N2吸附脱附、FT-IR及氨气程序升温脱附(NH3-TPD)等技术对其结构及酸强度进行了表征。结果显示,该中孔分子筛具有典型的中孔结构、良好的长程有序性和结晶度;BO3^3-和ZrO2的引入既增加了Mo-MCM-41中孔分子筛酸中心数量,又提高了其酸强度。在超临界CO2条件下,将此酸性中孔分子筛用于催化松香聚合反应。BO3^3-/ZrO2/Mo-MCM-41中孔分子筛显示出较高的催化活性,制得软化点为106℃的聚合松香,达到国家行业标准ZBB72008-1989规定的115号聚合松香产品质量标准。对BO3^3-/ZrO2/Mo-MCM-41的寿命进行了考察,并研究了催化剂失活的原因。

英文摘要:

Mo-MCM-41 molecular sieve was prepared by hydrothermal synthesis method, and BO3^-3-/ZrO2/Mo-MCM-41 molecusieve was prepared by impregnating Mo-MCM-41 successively with H3BO3 and Zr( SO4 )2 solutions. BO3^3-/ZrO2/Mo-MCM-41 molecular sieve was characterized by XRD, N2/adsorption-desorption, FT-IR and NH3-TPD measurement. The results show that the molecular sieve obtained possesses the characteristics of mesopores, good long-range order and crystallinity, and that BO3^3- and ZrO2 are combined with the framework of the molecular sieve so that its acidity is improved. To find out a new method for synthesize polymerized rosin to replace the conventional methods using sulfuric acid as catalyst that exists serious disadvantages, the mesoporous molecular sieve was firstly used under supercritical CO2 condition. It was shown in the reaction that the supercritical C02 fluid was favorable to the synthesis of polymerized rosin, and that BO3^3-/ZrO2/Mo-MCM-41 molecular sieve exhibited good catalytic activity. Under supercritical carbon dioxide conditions, the product which showed a softening point of 106℃ was obtained by using BO3^3-/ZrO2/Mo-MCM-41 mesoporous molecular sieves as catalyst. The reason for decrease of catalyst activity was studied by FT-IR measurement. It is the main factors leading to decrease of catalyst activity that acidity center of catalyst was lost after catalyst was used.

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期刊信息
  • 《林产化学与工业》
  • 北大核心期刊(2011版)
  • 主管单位:国家林业局
  • 主办单位:中国林学会林产化学化工分会 中国林业科学研究院林产化学工业研究所
  • 主编:宋湛谦
  • 地址:南京市锁金五村16号林化所内
  • 邮编:210042
  • 邮箱:cifp@vip.163.com
  • 电话:025-85482493 85482490
  • 国际标准刊号:ISSN:0253-2417
  • 国内统一刊号:ISSN:32-1149/S
  • 邮发代号:28-59
  • 获奖情况:
  • 全国中文核心期刊,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),英国农业与生物科学研究中心文摘,荷兰文摘与引文数据库,美国工程索引,中国中国科技核心期刊,中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),英国英国皇家化学学会文摘
  • 被引量:13287