煤直接液化用新型柱撑蒙脱石催化剂研究及展望

Research progress and prospect of new type pillared montmorillonite catalyst based on direct coal liquefaction

基于煤直接液化催化剂的发展现状,提出以蒙脱石作为催化剂载体,选择对煤液化有良好加氢活性的Fe与Cr、Co、Ni等作为活性组分,通过"柱撑"工艺制备适用于煤炭直接液化的新型柱撑蒙脱石催化剂。分析了柱撑蒙脱石催化剂在煤直接液化工艺中的优势,考察了国内外柱撑蒙脱石制备工艺的研究进展,指出了影响柱撑蒙脱石催化活性、热稳定性的关键因素及进一步研究方向。将活性金属组分"柱撑"到蒙脱石层间所得的柱撑蒙脱石催化剂具有优异的催化加氢性能,但是需要在柱撑工艺、催化剂热稳定性、孔径分布调控等方面进一步深入探究。

Based on the development status of catalysts for direct coal liquefaction,a new type of pillared montmorillonite catalyst was prepared through pillaring technique using montmorillonite as catalysts support,Fe and Cr,Co,Ni as active hydrogenation components. The advantages of pillared montmorillonite catalyst in direct coal liquefaction technique was analyzed,the domestic and foreign research progress of the pillared montmorillonite＇s preparation technique was reviewed. The main preparation process of new typepillared montmorillonite catalyst was summarized. Finally,the key factors which affected the catalytic activity and thermal stability of the pillared montmorillonite were pointed out. The results showed that,the pillared montmorillonite catalyst obtained by pillaring active hydrogenation components into the montmorillonite layer had excellent catalytic hydrogenation performance. The optimization of pillaring process,the development of catalyst with good thermal stability,and the adjustment of pore size distribution was the focuse in the future.