Provided is a preparation method for a cyclohexane dimethanol (CHDM), which can have a high trans content through particular conditions, additive addition, or reactant addition, which is controlled in a cyclohexane dicarboxylic acid (CHDA) hydrogenation reaction, and a cyclohexane dimethanol prepared thereby.

The present invention provides a production method for indene, comprising a dehydrogenation step of obtaining a reaction product containing indene by contacting a raw material composition containing indene with a dehydrogenation catalyst, wherein the dehydrogenation catalyst comprises a support containing aluminum, and a group 14 metal element and platinum supported on the support, a content of the platinum in the dehydrogenation catalyst is 0.6 to 2.5% by mass based on a whole amount of the dehydrogenation catalyst, and an atomic ratio of the group 14 metal element to the platinum in the dehydrogenation catalyst is 4.0 to 20.0.

The present invention provides a production method for indene, comprising a dehydrogenation step of obtaining a reaction product containing indene by contacting a raw material composition containing indene with a dehydrogenation catalyst, wherein the dehydrogenation catalyst comprises a support containing aluminum, and a group 14 metal element and platinum supported on the support, a content of the platinum in the dehydrogenation catalyst is 0.6 to 2.5% by mass based on a whole amount of the dehydrogenation catalyst, and an atomic ratio of the group 14 metal element to the platinum in the dehydrogenation catalyst is 4.0 to 20.0.

A method of autothermal oxidative coupling of methane (OCM) utilizes introducing a methane-containing feedstock and an oxygen-gas-containing feedstock into a reactor (10) as a flowing mixture (18) with a space time of 500 ms or less. The reactor (10) contains a catalyst bed (20) of an OCM catalyst that contacts the flowing mixture and wherein the catalyst bed (20) has a heat Peclet number (Pe.sub.h) of from 5 or less, a mass Peclet number (Pe.sub.m) of from 5 or more, and a transverse Peclet number (P) of from 1 or less while contacting the flowing mixture. The methane and oxygen of the feedstocks are allowed to react within the reactor (10) to form methane oxidative coupling reaction products. A reactor (10) for carrying out the OCM reaction is also disclosed.

A nitrous oxide (N.sub.2O) removal catalyst composition for treating an exhaust stream of an internal combustion engine is provided, containing a platinum group metal (PGM) component on a metal oxide-based support, wherein the N.sub.2O removal catalyst composition is in a substantially reduced form, such that it has an oxygen deficiency of about 0.05 mmol oxygen atoms/g or greater, and wherein the N.sub.2O removal catalyst composition provides effective removal of at least a portion of N.sub.2O from the exhaust stream under lean conditions at a temperature of about 350 C. or lower. N.sub.2O removal catalytic articles, systems, and methods are also provided for removing at least a portion of N.sub.2O from an exhaust stream under lean, low temperature conditions.

A nitrous oxide (N.sub.2O) removal catalyst composition for treating an exhaust stream of an internal combustion engine is provided, containing a platinum group metal (PGM) component on a metal oxide-based support, wherein the N.sub.2O removal catalyst composition is in a substantially reduced form, such that it has an oxygen deficiency of about 0.05 mmol oxygen atoms/g or greater, and wherein the N.sub.2O removal catalyst composition provides effective removal of at least a portion of N.sub.2O from the exhaust stream under lean conditions at a temperature of about 350 C. or lower. N.sub.2O removal catalytic articles, systems, and methods are also provided for removing at least a portion of N.sub.2O from an exhaust stream under lean, low temperature conditions.

A catalyst for dehydrogenation of hydrocarbons includes a support including zirconium oxide and alumina. A concentration of the zirconium oxide in the catalyst is in a range of from 1 weight percent (wt. %) to 20 wt. %. The catalyst includes from 0.01 wt. % to 2 wt. % of an alkali metal or alkaline earth metal. The catalyst includes from 1 wt. % to 2 wt. % of tin. The catalyst includes from 0.1 wt. % to 2 wt. % of a platinum group metal. The alkali metal or alkaline earth metal, tin, and platinum group metal are disposed on the support.

A catalyst for dehydrogenation of hydrocarbons includes a support including zirconium oxide and alumina. A concentration of the zirconium oxide in the catalyst is in a range of from 1 weight percent (wt. %) to 20 wt. %. The catalyst includes from 0.01 wt. % to 2 wt. % of an alkali metal or alkaline earth metal. The catalyst includes from 1 wt. % to 2 wt. % of tin. The catalyst includes from 0.1 wt. % to 2 wt. % of a platinum group metal. The alkali metal or alkaline earth metal, tin, and platinum group metal are disposed on the support.

Provided are a supported catalyst and a method for synthesizing a sucrose-6-ester. The supported catalyst includes an active functional component and an inorganic carrier, wherein the active functional component is a compound shown in formula (1), wherein n is a natural number greater than or equal to 2; R is an atom linked to a surface of the inorganic carrier; and one or two of R.sub.1, R.sub.2, and R.sub.3 is/are hydrocarbyl, and the rest are independently any one selected from the group consisting of oxygen, hydroxyl, hydrocarbyloxy, and acetoxy.

Provided are a supported catalyst and a method for synthesizing a sucrose-6-ester. The supported catalyst includes an active functional component and an inorganic carrier, wherein the active functional component is a compound shown in formula (1), wherein n is a natural number greater than or equal to 2; R is an atom linked to a surface of the inorganic carrier; and one or two of R.sub.1, R.sub.2, and R.sub.3 is/are hydrocarbyl, and the rest are independently any one selected from the group consisting of oxygen, hydroxyl, hydrocarbyloxy, and acetoxy.