Abstract:

Zeolite catalysts are widely used in oil refining, petrochemical and environmental catalysis etc. With decades of development, the preparation of zeolite catalysts are relatively mature. However, traditional routes usually involve the production of ammonia-nitrogen wastewater and nitrogen exhaust gas, which also inevitably lead to high production cost. Therefore, it is rather important to design and develop new clean and efficient preparation technology to reduce the cost and satisfy the increasingly restricted environmental demand. From the aspects of efficiency, environmental protecting, and economy, the problems in the preparation of zeolite catalysts are discussed as well as the corresponding solving tragedies such as avoiding or replacing organic template, sodium ion, solvent and binder, and recycling useful components. An outlook regarding the development trend of clean and efficient preparation of zeolite catalysts is also presented, which suggests that fundamental research should be strengthened and combined with its industrialization. In addition, the integration of various green preparation techniques with the aim to achieve high catalytic performance are the most important key to realize the eventual high efficient, low cost routes for preparation of zeolite catalysts.

Key words: zeolite, catalyst, preparation, clean, efficient, green, recovery

摘要：

分子筛催化剂广泛应用于石油炼制、石油化工和环境催化等领域，但以传统路线制备分子筛催化剂的过程中存在着有机氨氮废水和含氮废气排放、生产成本高的问题。为了满足日益严格的环保要求，同时达到降本增效的目的，设计开发分子筛催化剂的清洁高效制备技术显得尤为重要。本文从高效、环保和经济的角度综述了分子筛催化剂制备过程中存在的一些问题，以及为了解决上述问题所采取的包括避免或者替换使用有机模板剂、钠离子电荷平衡剂、溶剂和黏结剂，有效组分回收利用在内的技术进展。探讨了分子筛催化剂清洁高效制备技术的未来发展方向，指出加深对分子筛催化剂基础理论研究，并将基础研究和产业化相结合，以高效催化性能为前提，将现有多种清洁技术方案进行协调配合是高效率、低成本制备分子筛催化剂的工作重点。

关键词: 分子筛, 催化剂, 制备, 清洁, 高效, 绿色, 回收