公开(公告)号：US20030158037A1

公开(公告)日：2003-08-21

申请号：US10079450

申请日：2002-02-20

Applicant: ENGELHARD CORPORATION

Inventor： John S. Foong ,  Harold N. Rabinowitz

IPC: B01J023/58 ,  B01J023/02 ,  B01J023/06

CPC classification number: B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  B01J37/0244 ,  B01J37/0248 ,  F01N3/2803 ,  Y02T10/22

Abstract: Hydrogen sulfide formation is suppressed by a three-way conversion catalyst having an underlayer and a topcoat overlying the under layer. The under layer is prepared by dispersing a Group IIa metal oxide such as an oxide of magnesium, calcium, barium or strontium on a carrier such as a refractory metal oxide monolith. A topcoat overlying the undercoat is comprised of a three-way conversion catalyst material such as a platinum-group metal catalytic component, e.g., platinum, palladium, rhodium or mixtures thereof.

Abstract translation: 通过具有覆盖在下层上的底层和顶涂层的三元转化催化剂抑制硫化氢形成。 通过将诸如镁，钙，钡或锶的氧化物的IIa族金属氧化物分散在诸如难熔金属氧化物整料的载体上来制备底层。 覆盖底涂层的面漆由三元转化催化剂材料如铂族金属催化组分如铂，钯，铑或其混合物组成。

公开(公告)号：US20030100447A1

公开(公告)日：2003-05-29

申请号：US10003663

申请日：2001-10-26

Applicant: ENGELHARD CORPORATION

Inventor： Michel Deeba ,  John J. Steger ,  Harold N. Rabinowitz ,  John S. Foong

IPC: B01D053/94 ,  B01J023/40

CPC classification number: B01D53/945 ,  B01D53/865 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/902 ,  B01D2255/9025 ,  B01D2255/908 ,  B01D2255/9207 ,  B01J23/63 ,  B01J37/0244 ,  Y02T10/22

Abstract: The present invention relates to a layered catalyst composite of the type generally referred to as a three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. The structure of the layered catalyst composite of the present invention is designed wherein there are three layers in conjunction with a carrier: a first layer deposited on the carrier and comprising a high surface area refractory metal oxide; a second layer deposited on the first layer and comprising palladium and/or platinum deposited on a high surface area refractory metal oxide, and having substantially no oxygen storage components; and a third layer deposited on the second layer and comprising platinum and/or rhodium as well as an oxygen storage component, deposited on a high surface area refractory metal oxide.

Abstract translation: 本发明涉及一种具有同时催化烃和一氧化碳的氧化和还原氮氧化物的能力的通常称为三元转化催化剂的层状催化剂复合物。 设计本发明的层状催化剂复合材料的结构，其中有三层结合载体：沉积在载体上并包含高表面积难熔金属氧化物的第一层; 沉积在第一层上并包含沉积在高表面积难熔金属氧化物上的钯和/或铂，并且基本上没有储氧组分的第二层; 以及沉积在第二层上并且包含铂和/或铑以及沉积在高表面积难熔金属氧化物上的储氧组分的第三层。

公开(公告)号：US20040226440A1

公开(公告)日：2004-11-18

申请号：US10830351

申请日：2004-04-22

Applicant: ENGELHARD CORPORATION

Inventor： John S. Foong ,  Jeffrey B. Hoke

IPC: B01D053/02

CPC classification number: F02M35/10222 ,  B01D53/0407 ,  B01D2253/102 ,  B01D2253/1085 ,  B01D2253/25 ,  B01D2257/702 ,  B01D2258/01 ,  B01D2259/4146 ,  B01D2259/4516 ,  B01D2259/4566 ,  F02D21/08 ,  F02M25/08 ,  F02M25/0854 ,  F02M26/17 ,  F02M35/024 ,  F02M35/04 ,  F02M35/10013

Abstract: A hydrocarbon adsorption unit for recovery of volatile hydrocarbons which emanate from several sources and which would otherwise be released into the atmosphere through the air cleaner of an automobile engine when the engine is shut-off. The unit is positioned in the air intake system such that all air flowing through the engine passes through the unit. The unit comprises a housing having an air inlet and an air outlet. The housing contains a substrate and a volatile hydrocarbon adsorber material coated on the surface of the substrate. The adsorber material may be silica gel, a molecular sieve and/or activated carbon. The material further contains a binder that will cause the material to adhere to the surface of the substrate.

Abstract translation: 一种碳氢化合物吸附装置，用于回收挥发性碳氢化合物，这些挥发性烃类从多个来源发出，当发动机关闭时，其将被汽车发动机的空气净化器释放到大气中。 该单元位于进气系统中，使得流过发动机的所有空气通过该单元。 该单元包括具有空气入口和空气出口的壳体。 壳体包含涂覆在基底表面上的基底和挥发性烃吸附材料。 吸附剂材料可以是硅胶，分子筛和/或活性炭。 该材料还含有将导致材料粘附到基底表面的粘合剂。