Methods and compositions related to a selective catalytic reduction catalyst comprising iron and vanadium, wherein the vanadium is present as (1) one or more vanadium oxides, and (2) metal vanadate of the form Fe.sub.xM.sub.yVO.sub.4 where x=0.2 to 1 and y=1−x, and where M comprises one or more non-Fe metals when y>0.

A process for capturing carbon dioxide in which an exhaust stream containing carbon dioxide is cooled by a plurality of stages of indirect heat exchange to produce a cooled exhaust stream, compressed over a plurality of stages of compression, and separated to produce a CO2-enriched stream and a CO2-depleted stream. The CO2-enriched stream is dehydrated by contacting the CO2-enriched stream with a regenerated desiccant to produce a CO2 product stream and a spent desiccant. The CO2-depleted stream is heated by indirect heat exchange against the exhaust stream to produce a hot CO2-depleted stream, while a portion of the CO2-depleted stream is extracted from an interstage of the plurality of stages of indirect heat exchange to regenerate the spent desiccant. The hot CO2-depleted stream is expanded over a plurality of stages of expansion to drive the compression of the cooled exhaust, thereby producing an expanded CO2-depleted stream.

The present disclosure provides a method for preparing a supported metal alloy catalyst for low temperature engine exhaust oxidation without CO or NO inhibition. The catalyst includes bimetallic PdCu alloy deposited on a SiO.sub.2 support using the strong electrostatic adsorption method. The PdCu catalyst may be combined with a traditional PGM-based automotive oxidation catalyst in a series or dual-bed configuration. The first stage of the dual-bed system includes the PdCu catalyst, with the primary role of oxidizing CO at low temperature; the PGM-based catalyst in the second stage then oxidizes NO and hydrocarbons in the absence of any CO-inhibition effects.

An embodiment ceria-alumina support (CeO.sub.2—Al.sub.2O.sub.3 support) includes a nano-ceria having a shape of a polygonal bipyramid or a truncated polygonal bipyramid supported on alumina. An embodiment noble metal catalyst for treating exhaust gas includes a noble metal deposited on a ceria-alumina support (CeO.sub.2—Al.sub.2O.sub.3 support) that includes a nano-ceria having a shape of a polygonal bipyramid or a truncated polygonal bipyramid supported on alumina. An embodiment method for affecting resistance to sulfur-poisoning of a noble metal catalyst through structural transformation of nano-ceria supported on alumina includes performing a hydrothermal treatment of ceria supported on γ-alumina.

An exhaust gas carbon dioxide capture and recovery system that may be mounted on a mobile vehicle or vessel. The system may include an exhaust absorber system, a solvent regenerator, a solvent loop, a carbon dioxide compressor, and a carbon dioxide storage tank, among other components. The system may be configured and integrated such that energy in the exhaust may be used to power and drive the carbon dioxide capture while having minimal parasitic effect on the engine.

A carbon dioxide (CO.sub.2) capture system to reduce CO.sub.2 emissions comprises an absorption zone and a regeneration zone. The absorption zone captures CO.sub.2 from exhaust gas by absorption in a liquid solvent separated from the exhaust gas by a separator. The liquid solvent comprises a blend of alkali metal salts of two or more amino or amino-sulfonic acids, thereby forming a first constituent and a second constituent. The first constituent is a primary or secondary amino or amino sulfonic acid with molar mass of less than 200 g/mol. The second constituent has a molar mass of less than 300 g/mol. The regeneration zone may rejuvenate the liquid solvent rich in captured CO.sub.2 by heating so that a resulting liquid solvent with a low concentration of CO.sub.2 is pumped back to the absorption zone. An on-board CO.sub.2 capture and storage system for a mobile internal combustion engine and a method for capturing CO.sub.2 are also described.

An information management system provided with a plurality of external devices able to send and receive information and a server configured to be able to communicate with the external devices. The external devices are configured to send to the server the amounts of CO.sub.2 recovery recovered by the vehicles provided with the CO.sub.2 recovery devices. The server is configured to add up and manage the amounts of CO.sub.2 recovery sent from the external device.

A sorption device for filtering evaporation emissions from a fuel tank, includes a vessel, with a first opening connected to an air removal path of the fuel tank and a second opening opening to atmosphere, a middle annular space between a radial outer circumferential boundary of the middle annular space and a radial inner circumferential boundary thereof radially inwardly spaced apart from the outer boundary, a first annular space formed between a radial inner surface of a fluid-tight circumferential outer shell of the vessel, the radial outer boundary being radially inwardly spaced from the inner surface, a sorbent material arranged in the middle annular space, and evaporation emissions from the fuel tank are guided through the first opening into the first annular space, through the sorbent material into a central space of the vessel in the radial direction, and through the second opening to atmosphere or another sorption device.

The present disclosure is directed to an emission treatment system for NO.sub.x abatement in an exhaust stream of an ammonia-fueled engine, the emission treatment system including a selective catalytic reduction (SCR) catalyst disposed on a substrate in fluid communication with the exhaust stream, an oxidation catalyst disposed on a substrate positioned either upstream or downstream of the SCR catalyst and in fluid communication with the exhaust stream and the SCR catalyst, and optionally, one or more adsorption components disposed on a substrate positioned upstream and/or downstream of the SCR catalyst and in fluid communication with the exhaust stream and the SCR catalyst, the adsorption component chosen from low temperature NO.sub.x adsorbers (LT-NA), low temperature ammonia adsorbers (LT-AA), low temperature water vapor adsorbers (LT-WA), and combinations thereof. The disclosure further provides a related method of treatment of an exhaust gas.

A powdered catalyst material on a titanium oxide basis. The powdered catalyst material includes a combined content of at least 90 wt.-% of a hydrated titanium oxide having the general formula TiO.sub.(2-x)(OH).sub.2x, with 0<x≤1, (calculated as TiO.sub.2), and a silicon dioxide and hydrated precursors of the silicon dioxide (calculated as SiO.sub.2). A weight ratio of TiO.sub.2/SiO.sub.2, determined for TiO.sub.2 and SiO.sub.2 respectively, is at least 3 and less than 30. The wt.-% is based on a total weight of the catalyst material after the catalyst material has been dried at 105° C. for at least 2 hours. The powdered catalyst material has a specific surface area of >300 m.sup.2/g and an isoelectric point of from 4.0 to 7.0.