Disclosed are a catalyst composition for oxidative dehydrogenation and a method of preparing the same. More particularly, disclosed is a catalyst composition comprising a multi-ingredient-based metal oxide catalyst and a mixed metal hydroxide. The catalyst composition and the method of preparing the same according to the present disclosure may prevent loss occurring in a filling process due to superior mechanical durability and wear according to long-term use, may inhibit polymer formation and carbon deposition during reaction, and may provide a superior conversion rate and superior selectivity.

Provided is a method of subjecting an alkene to partial oxidation by using a fixed bed multitubular reactor, thereby producing an unsaturated aldehyde and/or an unsaturated carboxylic acid each corresponding to the alkene, wherein a plurality of catalyst layers formed by N division (N is N2) with respect to a gas flow direction of a reaction tube are provided, and when a change ( C.) of hot spot temperature per 1 C. change of reaction bath temperature in the catalyst layer is designated as Sn, at least one of the plurality of catalyst layers is regulated to Sn6.

There is provided a process for producing a shaped catalyst for a fixed bed oxidation reaction or a fixed bed oxidative dehydrogenation reaction, the catalyst having both of sufficient mechanical strength and catalyst performance, and the catalyst is produced by supporting a catalyst powder containing a complex metal oxide having molybdenum as an essential ingredient on an inert support by a tumbling granulation method at a relative centrifugal force of 1 to 35 G.

Catalytic compositions are provided that are effective for providing increased acrylonitrile product without a significant decrease in hydrogen cyanide and/or acetonitrile production and provide an overall increase in production of acrylonitrile, hydrogen cyanide and acetonitrile. The catalytic compositions include a complex of metal oxides and include at least about 15% m-phase plus t-phase by weight and have a weight ratio of m-phase to m-phase plus t-phase of 0.45 or greater.

A method for preparing a catalyst for preparing (meth)acrylic acid, the method including preparing a first catalyst suspension including a molybdenum-based compound, a bismuth-based compound, an M.sup.2-based compound, an M.sup.3-based first compound, and an M.sup.6-based compound; preparing a second catalyst suspension by adding an M.sup.3-based second compound to the first catalyst suspension; and preparing a molybdenum-bismuth-based composite metal oxide of Chemical Formula 1 by drying the second catalyst suspension:

Mo.sub.aBi.sub.bM.sup.1.sub.cM.sup.2.sub.dM.sup.3.sub.eM.sup.4.sub.fM.sup.5.sub.gM.sup.6.sub.hO.sub.i[Chemical Formula 1]

where the M.sup.3-based first compound is selected from among M.sup.3-based metal nitrates, acetates, chlorides, sulfates, and mixtures thereof, the M.sup.3-based second compound is selected from among M.sup.3-based metal organic acid salts having 6 or more carbon atoms, carbonates, hydroxides, oxides, and mixtures thereof, and the second catalyst suspension includes a soluble and an insoluble M.sup.3-based compound:

Mo.sub.aBi.sub.bM.sup.1.sub.cM.sup.2.sub.dM.sup.3.sub.eM.sup.4.sub.fM.sup.5.sub.gM.sup.6.sub.hO.sub.i[Chemical Formula 1]

where the substituents are as defined in the specification; and a method for preparing (meth)acrylic acid.

Provided is an ammoxidation catalyst for propylene, a manufacturing method of the same, and an ammoxidation method of propylene using the same. Specifically, according to one embodiment of the invention, there is provided a catalyst having a structure in which metal oxide is supported on a silica carrier, having narrow particle size distribution, and having excellent attrition loss. The catalyst may have a D50 particle diameter of 30 to 300 m, and D10 particle diameter, D50 particle diameter and D90 particle diameter may satisfy the relationship (D90D10)/D50<2.0. The catalyst may have a chemical formula Mo.sub.12Bi.sub.aFe.sub.bCo.sub.cK.sub.dO.sub.x, where a is 0.1 to 5, b is 0.1 to 5, c is 0.01 to 10, d is 0.01 to 2, and x is 24 to 48.

There is provided an ammoxidation catalyst for propylene having a structure in which molybdenum (Mo) oxide is supported first, and an oxide of heterogeneous metals including bismuth (Bi) is supported later. Related methods of making and using the catalyst are also provided.

In one aspect, the disclosure relates to a process for acrylonitrile manufacture using forced dynamic operation over transition metal promoted bismuth molybdate-based catalysts. The forced dynamic operation leverages catalyst lattice oxygen in ammoxidation of propene to improved acrylonitrile productivity and yield. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

The present disclosure relates to an ammoxidation catalyst for propylene, a manufacturing method of the same, and an ammoxidation method of propylene using the same. Specifically, in one embodiment of the present disclosure, there is provided a catalyst having a structure in which a metal oxide is supported on a silica support having a narrow particle size distribution, and excellent wear resistance.

A method for preparing a molybdenum-bismuth-based composite metal oxide.