-
1.
公开(公告)号:US20150298057A1
公开(公告)日:2015-10-22
申请号:US14789526
申请日:2015-07-01
Applicant: Cristal USA Inc.
Inventor: Steve M. Augustine , Modasser El-Shoubary , Dennis Clark
IPC: B01D53/86 , B01J37/08 , B01J37/02 , B01J27/19 , B01J27/192
CPC classification number: B01D53/8628 , B01D2255/104 , B01D2255/2063 , B01D2255/20707 , B01D2255/20715 , B01D2255/20723 , B01D2255/20746 , B01D2255/20761 , B01D2255/20769 , B01D2255/20792 , B01D2255/2094 , B01D2255/2096 , B01D2255/70 , B01D2255/707 , B01J21/063 , B01J21/066 , B01J23/14 , B01J23/22 , B01J23/28 , B01J23/30 , B01J23/34 , B01J23/6525 , B01J23/88 , B01J27/188 , B01J27/19 , B01J27/192 , B01J27/199 , B01J37/0215 , B01J37/031 , B01J37/08
Abstract: A vanadia-based catalytic composition for reduction of nitrogen oxides includes a titania-based support material; vanadia deposited on the titania-based support material; a primary promoter comprising tungsten oxide, molybdenum oxide or combinations thereof; and an amount of phosphate to achieve a mole ratio of phosphorus to vanadium plus molybdenum of about 0.2:1 or greater. A zirconia, tin or manganese oxide can be added to further inhibit the volatility of molybdenum. Results show low SO2 oxidation rates and excellent NOx conversion and/or molybdenum stability.
Abstract translation: 用于还原氮氧化物的基于氧化钒的催化剂组合物包括二氧化钛基载体材料; 氧化钒沉积在二氧化钛基载体材料上; 包含氧化钨,氧化钼或其组合的主要助催化剂; 和一定量的磷酸盐,使磷与钼的摩尔比达到0.2:1以上。 可以加入氧化锆,锡或锰氧化物以进一步抑制钼的挥发性。 结果显示低的SO 2氧化速率和优异的NOx转化率和/或钼的稳定性。