Metal oxide catalysts comprising various dopants are provided. The catalysts are useful as heterogenous catalysts in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons such as ethane and ethylene. Related methods for use and manufacture of the same are also disclosed.

A catalyst including gold, or a compound thereof, and sulphur, a compound of sulphur, trichloroisocyanuric acid or a metal dichloroisocyanurate on a support, together with a process for manufacturing the catalyst and its use in a chemical process are described.

The present invention discloses a method for preparing the nano-porous oxide-noble metal composite material by deoxidation, comprising dissolving the noble metal ion or fine particles, the oxide salt to be dissolved and the target oxide salt in the pure water in a proportion to form the mixed solution, adding the surface active agent, and stirring magnetically; dropping the precipitant gradually to form the precipitate, stirring for 4 h, separating and cleaning the precipitate, and drying, grinding and calcining at a high temperature; corroding fully and dissolving part of the oxide with an etchant, preserving the noble metal and the target oxide, separating, cleaning, drying at 80 C., and heat treating at a high temperature to obtain the nano-porous oxide-noble metal composite material. The present invention has the technological advantages of simple operation, low energy consumption, environmental protection and suitable for batching, etc.

A catalytic article for treating an exhaust gas stream containing one or more of NOx, hydrocarbons, CO, SOx and ammonia from a combustion turbine comprises (a) a substrate having an inlet end and an outlet end defining an axial length; (b) an oxidation layer comprising an oxidation catalyst comprising one or more noble metals, the oxidation layer being positioned on the substrate and covering the axial length of the substrate; and (c) an SCR layer comprising an SCR catalyst, the SCR layer being positioned on the oxidation layer and overlapping a portion of the oxidation layer, wherein the portion is less than 100%.

A catalyst system may be regenerated by a method that includes exposing the catalyst system to a de-coking treatment. The de-coking treatment may include three consecutive treatment conditions including a first treatment condition, a second treatment condition, and a third treatment condition. The catalyst system may include a metathesis catalyst and a cracking catalyst. The metathesis catalyst may include tungsten oxide and silica carrier, and the cracking catalyst may include ZSM-5 zeolite.

A catalyst system may be regenerated by a method that includes exposing the catalyst system to a de-coking treatment. The de-coking treatment may include three consecutive treatment conditions including a first treatment condition, a second treatment condition, and a third treatment condition. The catalyst system may include a metathesis catalyst and a cracking catalyst. The metathesis catalyst may include tungsten oxide and silica carrier, and the cracking catalyst may include ZSM-5 zeolite.

The present invention discloses a method for preparing the nano-porous oxide-noble metal composite material by deoxidation, comprising dissolving the noble metal ion or fine particles, the oxide salt to be dissolved and the target oxide salt in the pure water in a proportion to form the mixed solution, adding the surface active agent, and stirring magnetically; dropping the precipitant gradually to form the precipitate, stirring for 4 h, separating and cleaning the precipitate, and drying, grinding and calcining at a high temperature; corroding fully and dissolving part of the oxide with an etchant, preserving the noble metal and the target oxide, separating, cleaning, drying at 80 C., and heat treating at a high temperature to obtain the nano-porous oxide-noble metal composite material. The present invention has the technological advantages of simple operation, low energy consumption, environmental protection and suitable for batching, etc.

A poison-resistant catalytic converter includes a washcoat having a support material comprised of titania and/or silica and a plurality of platinum group metal particles disposed in the support material. The washcoat is disposed on a substrate having a plurality of cells that define respective apertures. The catalytic converter is resistant to poisoning from sulfur and phosphorous compounds while operating at low temperatures. Applications include spark ignited internal combustion engines in combined heat and power systems, vehicles, combustion turbines, boilers and other applications for utilities, industry and vehicle emissions control.

A poison-resistant catalytic converter includes a washcoat having a support material comprised of titania and/or silica and a plurality of platinum group metal particles disposed in the support material. The washcoat is disposed on a substrate having a plurality of cells that define respective apertures. The catalytic converter is resistant to poisoning from sulfur and phosphorous compounds while operating at low temperatures. Applications include spark ignited internal combustion engines in combined heat and power systems, vehicles, combustion turbines, boilers and other applications for utilities, industry and vehicle emissions control.

The present invention relates to a heterogeneous catalyst for making a dicarboxyl acid aromatic heterocyclic compound and a method for preparing a dicarboxyl acid aromatic heterocyclic compound, and according to the present invention, an oxide with improved yield and purity can be produced by an oxidation reaction of a bio-based aromatic heterocyclic compound under a heterogeneous catalyst.