Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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B01J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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23/00
Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
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B01J23/54
combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
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B01J23/68
with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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B01J23/683
with chromium, molybdenum or tungsten
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B01J23/683

NOx ADSORBER CATALYST
20220072514 · 2022-03-10 ·

A method of treating an exhaust gas from an internal combustion engine comprising contacting the exhaust gas with a lean NO.sub.x trap catalyst is disclosed. The lean NO.sub.x trap catalyst comprises a first layer and a second layer.

NOx ADSORBER CATALYST
20180318801 · 2018-11-08 ·

A lean NO.sub.x trap catalyst and its use in an emission treatment system for internal combustion engines is disclosed. The lean NO.sub.x trap catalyst comprises a first layer and a second layer.