-
公开(公告)号：US20150064074A1
公开(公告)日：2015-03-05
申请号：US14538321
申请日：2014-11-11
发明人： Todd Howard BALLINGER , Philip Gerald BLAKEMAN , Guy Richard CHANDLER , Hai-Ying CHEN , Julian Peter COX , Joseph Michael FEDEYKO , Alexander Nicholas Michael GREEN , Paul Richard PHILLIPS , Stuart David REID , Erich Conlan WEIGERT , James Alexander WYLIE
CPC分类号： B01J29/763 , B01D53/565 , B01D53/8621 , B01D53/9413 , B01D53/9418 , B01D53/9422 , B01D2251/2062 , B01D2251/2067 , B01D2255/2065 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9202 , B01D2258/012 , B01J29/7065 , B01J35/023 , B01J37/0009 , B01J37/0215 , B01J37/0246 , B01J2229/186 , B01J2229/42
摘要： A catalyst composition is provided wherein the composition includes a zeolite having a non-phosphorous CHA crystal structure and having a mean crystalline size of about 1 to about 5 microns; and at least one non-aluminum base metal present in an amount sufficient to achieve a NOx conversion of at least about 65% at a temperature of at least 450° C.
摘要翻译： 提供了一种催化剂组合物，其中组合物包括具有非磷CHA晶体结构并具有约1至约5微米的平均结晶尺寸的沸石; 和至少一种非铝贱金属以足以在至少450℃的温度下实现至少约65％的NOx转化的量存在。
-
公开(公告)号：US20180066554A1
公开(公告)日：2018-03-08
申请号：US15802492
申请日：2017-11-03
摘要： An exhaust system for treating an exhaust gas from an internal combustion engine is disclosed. The system comprises a modified lean NOx trap (LNT), a urea injection system, and an ammonia-selective catalytic reduction catalyst. The modified LNT comprises a first layer and a second layer. The first layer comprises a NOx adsorbent component and one or more platinum group metals. The second layer comprises a diesel oxidation catalyst zone and an NO oxidation zone. The diesel oxidation catalyst zone comprises a platinum group metal, a zeolite, and optionally an alkaline earth metal. The NO oxidation zone comprises a platinum group metal and a carrier. The modified LNT stores NOx at temperatures below about 200° C. and releases at temperatures above about 200° C. The modified LNT and a method of using the modified LNT are also disclosed.
-
公开(公告)号：US20160047286A1
公开(公告)日：2016-02-18
申请号：US14820581
申请日：2015-08-07
CPC分类号： F01N3/0842 , B01D53/9422 , B01D53/9477 , B01D2251/2067 , B01D2255/1021 , B01D2255/1023 , B01D2255/2042 , B01D2255/2065 , B01D2255/405 , B01D2255/50 , B01D2255/9022 , B01D2255/9032 , B01D2255/91 , B01J21/005 , B01J23/63 , B01J29/068 , B01J29/072 , B01J35/0006 , B01J37/0246 , F01N3/0814 , F01N3/103 , F01N3/2066 , F01N2570/14 , F01N2610/02 , Y02A50/2325 , Y02A50/2344 , Y02T10/24
摘要： An exhaust system for treating an exhaust gas from an internal combustion engine is disclosed. The system comprises a modified lean NO trap (LNT), a urea injection system, and an ammonia-selective catalytic reduction catalyst. The modified LNT comprises a first layer and a second layer. The first layer comprises a NO adsorbent component and one or more platinum group metals. The second layer comprises a diesel oxidation catalyst zone and an NO oxidation zone. The diesel oxidation catalyst zone comprises a platinum group metal, a zeolite, and optionally an alkaline earth metal. The NO oxidation zone comprises a platinum group metal and a carrier. The modified LNT stores NO at temperatures below about 200° C. and releases at temperatures above about 200° C. The modified LNT and a method of using the modified LNT are also disclosed.
摘要翻译： 公开了一种用于处理来自内燃机的废气的排气系统。 该系统包括改性的贫NO捕集器（LNT），尿素注入系统和氨选择性催化还原催化剂。 修饰的LNT包括第一层和第二层。 第一层包括NO吸附剂组分和一种或多种铂族金属。 第二层包括柴油氧化催化剂区和NO氧化区。 柴油氧化催化剂区域包括铂族金属，沸石和任选的碱土金属。 NO氧化区包含铂族金属和载体。 改性的LNT在低于约200℃的温度下存储NO，并在高于约200℃的温度下释放。还公开了改进的LNT和使用经修饰的LNT的方法。
-
-
搜索结果
3 条记录 (耗时 0.013 秒)
