铝业废物赤泥在多相催化氧化领域中的回收利用研究进展.docVIP

  铝业废物赤泥在多相催化氧化领域中的回 收利用研究进展# 5 10 15 20 25 30 35 40  摘要：拜耳法在氧化铝生产工业中得到了广泛应用，赤泥作为生产过程中的主要废渣，其产量也在逐年递 增。数量巨大的赤泥若进行不合理的处置，将对生态环境造成较大的负面影响。近年来，赤泥资源的有效 处置和资源综合利用受到广泛关注，特别是综合利用其中的有效成分来制备新型、高效可替代催化剂已成 为多相催化反应领域的研究热点之一。同传统商业催化剂相比，原矿赤泥存在催化活性低、碱性强以及重 金属组分多且易流失等问题，通过合理的表面改性处理和结构调控，可以显著解决上述问题。本文针对赤 泥资源在多相催化反应领域如：加氢反应、加氢脱氯反应、废气处理和废水净化等领域的资源回收利用进 行综述。 关键词：环境工程; 赤泥；多相催化反应；催化剂；资源综合利用 中图分类号：X703.1 Research Progress of Alumina Industry Waste Red Mud Reutilization in Heterogeneous Catalytic Oxidation LI Huanan1, QI Fei1,2, SUN Dezhi1,2 (1. College of Environmental Science and Engineering, Beijing Forestry Univeristy, Beijing 100083; 2. Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083) Abstract: Red mud (RM) is a main by-product of bauxite processing via the Bayer process which has been widely used in alumina production. Meanwhile, unreasonable disposal poses a significant environment problem due to the increasing in recent years. The safe disposal and resources utilization of red mud have received considerable attention, in particular, comprehensive utilization the active content to prepare novelty and highly efficient catalyst have become the focus of much new researches. Compared with traditional commercial catalyst, there are a lot of problems for the ore red mud, such as the low catalytic activity, the high alkalinity and the leaching of toxic heavy metal components. A reasonable surface modification and structural regulation can significantly improve the above problems. This paper reviews the studies on red mud as a catalyst in hydrogenation reactions, hydrodechlorination reactions, exhaust gas clean-up, waste water treatment. Key words: Environmental engineering； Red mud; Heterogeneous catalytic Reaction; catalyst; Resources utilization 0 引言 在化工行业中的多相催化反应领域，贵金属单质和金属氧化物是使用较为广泛的催化 剂。其中，贵金属单质催化反应活性较强，却因为价格昂贵、稳定性差、易烧结、具有较强 的挥发性和毒性而被大范围限制使用[1]。与贵金属单质相比，尽管金属氧化物的催化活性稍 差，但由于其低廉的价格而具有较高的经济可行性。此外，它们的催化稳定性和耐中毒性也 优于贵金属单质[2,3