Ceramic Membranes for Catalytic Liquid Reaction Application

催化液体反应应用陶瓷膜

• 批准号: 8906481
• 负责人: Theodore Tsotsis
• 金额: $ 22.08万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-01 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906481&HistoricalAwards=false
• 关键词: Ceramic; Membranes; Catalytic; Liquid; Reaction

Ceramic membranes have good pore size uniformity, and good thermal and mechanical properties. They can be used at high temperatures (1000>C) and in the corrosive environments often found in the chemical industry. They have the additional advantage that they can be thermally treated (500>C), steam cleaned and sterilized. Many industrial catalytic reactions show low conversion and/or yields due either to unfavorable thermodynamics, product inhibition or undesirable side reactions. This in turn necessitates more severe operating conditions (which in turn require higher catalyst replacement rates) and costly separation operations. Catalytic membrane reactors, units in which the membrane is an integral part of the reactor, combine reaction and separation in a single unit operation. Such units have the advantage that the membrane provides for selective removal of one or more products and/or stable intermediates in parallel with the reaction, thus driving the reaction continuously towards the product side and resulting in higher conversions. With higher conversion, the process can be run at lower pressure and temperature, resulting in longer catalyst life, reduced recycle, and reduced downstream separation requirements. The membrane also enables control of surface concentrations and therefore selectivity and product distribution. It is the primary goal of this Industry University Cooperative Research (IUCR) project to test the applicability of ceramic membrane reactor technology in the area of oil and asphaltene hydro processing. Two types of alumina ceramic membranes will be studied, membranes prepared by anodic oxidation of aluminum and membranes prepared by the Sol-Gel technique. Both kinds of membranes have a virtually unimodal pore size distribution and show excellent separatory functions. They have different surface properties and different pore structures and could therefore have different capabilities and/or uses.

陶瓷膜具有良好的孔径均匀性， 热和机械性能。 可以在高 在高温（1000 ℃）和腐蚀性环境中， 在化学工业中发现。 他们有额外的 优点是它们可以被热处理（500 ℃），蒸汽 清洗消毒。 许多工业催化反应 显示出低转化率和/或产率，这是由于不利的 热力学、产物抑制或不期望的方面 反应. 这反过来又需要更严格的操作。 条件（这又需要更高的催化剂更换 #21453;和高成本的分离操作。 催化膜 反应器，其中膜是整体部分的单元 该反应器将联合收割机反应和分离结合在一个单元中 操作 这种单元具有的优点是， 提供一种或多种产物的选择性去除，和/或 与反应平行的稳定中间体，因此 使反应持续向产物侧进行， 导致更高的转化率。 随着转化率的提高， 该方法可以在较低的压力和温度下进行， 导致更长的催化剂寿命，减少的再循环，和 降低下游分离要求。 述膜还 能够控制表面浓度， 选择性和产物分布。 这是这个工业大学合作社的首要目标 研究（IUCR）项目，以测试陶瓷的适用性 石油和沥青质领域的膜反应器技术 加氢处理 两种类型的氧化铝陶瓷膜将 铝阳极氧化膜的研究 和通过溶胶-凝胶技术制备的膜。 两种 的膜具有几乎单峰的孔径分布 并显示出良好的分离功能。 他们有不同 表面性质和不同的孔隙结构， 因此具有不同的能力和/或用途。