A catalyst comprising a microporous crystalline metallosilicate having a Constraint Index of 12, or 10, or 8, or 6 or less, a binder, a Group 1 alkali metal or a compound thereof and/or a Group 2 alkaline earth metal or a compound thereof, a Group 10 metal or a compound thereof, and, optionally, a Group 11 metal or a compound thereof; wherein the catalyst is calcined in a first calcining step before the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof; and wherein the first calcining step includes heating the catalyst to first temperatures of greater than 500° C.; and wherein the catalyst is calcined in a second calcining step after the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof wherein the second calcining step includes heating the catalyst to temperatures of greater than 400° C.

A millimeter-scale peroxymonosulfate activator ZSM-5-(C@Fe) and a preparation method and an application thereof are provided. According to the method, a PMS activator ZSM-5-(C@Fe) with a millimeter-scale stable structure is synthesized in the following steps: (1) preprocessing a ZSM-5 by a carboxylation method to obtain a ZSM-5-COOH; (2) synthesizing a ferrous metal organic framework material by a thermal method to obtain a precursor Fe (II)-MOF-74; (3) dispersing the ZSM-5-COOH in the step (1) and an ethyldiol methacrylate in an acetonitrile, and mixing evenly to obtain a mixed solution; and adding the precursor Fe(II)-MOF-74 in the step (2) into the mixed solution, carrying out a stirring reaction under an action of an initiator, filtering to obtain a precipitate, washing, and drying in vacuum to obtain ZSM-5-MOFs; and (4) in a nitrogen atmosphere, heating the ZSM-5-MOFs in the step (3) to carry out high-temperature pyrolysis to obtain the millimeter-scale peroxymonosulfate activator ZSM-5-(C@Fe).

A millimeter-scale peroxymonosulfate activator ZSM-5-(C@Fe) and a preparation method and an application thereof are provided. According to the method, a PMS activator ZSM-5-(C@Fe) with a millimeter-scale stable structure is synthesized in the following steps: (1) preprocessing a ZSM-5 by a carboxylation method to obtain a ZSM-5-COOH; (2) synthesizing a ferrous metal organic framework material by a thermal method to obtain a precursor Fe (II)-MOF-74; (3) dispersing the ZSM-5-COOH in the step (1) and an ethyldiol methacrylate in an acetonitrile, and mixing evenly to obtain a mixed solution; and adding the precursor Fe(II)-MOF-74 in the step (2) into the mixed solution, carrying out a stirring reaction under an action of an initiator, filtering to obtain a precipitate, washing, and drying in vacuum to obtain ZSM-5-MOFs; and (4) in a nitrogen atmosphere, heating the ZSM-5-MOFs in the step (3) to carry out high-temperature pyrolysis to obtain the millimeter-scale peroxymonosulfate activator ZSM-5-(C@Fe).

A rare earth- and phosphorus-containing molecular sieve of MFI structure rich in mesopores has a ratio of n(SiO.sub.2)/n(Al.sub.2O.sub.3) of more than 15 and less than 70. The molecular sieve has a content of phosphorus of 1-15 wt %, calculated as P.sub.2O.sub.5 and based on the dry weight of the molecular sieve. The content of the supported metal in the molecular sieve is 1-10 wt % supported metal M1 and 0.1-5 wt % supported metal M2 based on the oxide of the supported metal and the dry weight of the molecular sieve. The supported metal M1 is one or two selected from lanthanum and cerium, and the supported metal M2 is one selected from iron, cobalt, nickel, copper, manganese, zinc, tin, bismuth and gallium; the volume of mesopores in the molecular sieve represents 40-70% by volume of the total pore volume of the molecular sieve by volume.

A rare earth- and phosphorus-containing molecular sieve of MFI structure rich in mesopores has a ratio of n(SiO.sub.2)/n(Al.sub.2O.sub.3) of more than 15 and less than 70. The molecular sieve has a content of phosphorus of 1-15 wt %, calculated as P.sub.2O.sub.5 and based on the dry weight of the molecular sieve. The content of the supported metal in the molecular sieve is 1-10 wt % supported metal M1 and 0.1-5 wt % supported metal M2 based on the oxide of the supported metal and the dry weight of the molecular sieve. The supported metal M1 is one or two selected from lanthanum and cerium, and the supported metal M2 is one selected from iron, cobalt, nickel, copper, manganese, zinc, tin, bismuth and gallium; the volume of mesopores in the molecular sieve represents 40-70% by volume of the total pore volume of the molecular sieve by volume.

An ammonia slip catalyst having an SCR catalyst and an oxidation catalyst comprising at least two metals, each of which is selected from a specific group, and a substrate upon which at least oxidation catalyst is located is described. The ammonia slip catalyst can have dual layers, with one of the layers containing an SCR catalyst, a second layer containing the oxidation catalyst with comprises at least two metals, each of which is selected from a specific group, and the ammonia slip catalyst does not contain a platinum group metal. Methods of making and using the ammonia slip catalyst to reduce ammonia slip are described.

An ammonia slip catalyst having an SCR catalyst and an oxidation catalyst comprising at least two metals, each of which is selected from a specific group, and a substrate upon which at least oxidation catalyst is located is described. The ammonia slip catalyst can have dual layers, with one of the layers containing an SCR catalyst, a second layer containing the oxidation catalyst with comprises at least two metals, each of which is selected from a specific group, and the ammonia slip catalyst does not contain a platinum group metal. Methods of making and using the ammonia slip catalyst to reduce ammonia slip are described.

The present disclosure relates to a partial oxidation catalyst that causes a light hydrocarbon partial oxidation reaction to proceed readily with high activity and high selectivity and a high-yield carbon monoxide production method using the same. The present disclosure further relates to a light hydrocarbon partial oxidation catalyst containing a zeolite supporting cobalt and rhodium.

The present disclosure relates to a partial oxidation catalyst that causes a light hydrocarbon partial oxidation reaction to proceed readily with high activity and high selectivity and a high-yield carbon monoxide production method using the same. The present disclosure further relates to a light hydrocarbon partial oxidation catalyst containing a zeolite supporting cobalt and rhodium.

Porous zeolite monolith compositions for the catalytic cracking of alkanes. The compositions may be prepared layer by layer using a 3D printer such that the compositions comprise a plurality of micropores and a plurality of mesopores and may be characterized by macro-meso-microporosity.