A process provides for minimizing an amount of fuel gas utilized in an absorber off-gas incinerator and better control of emissions. The process provides for less temperature deviations in the absorber off-gas incinerator firebox and for less deviation in an amount of oxygen in the absorber off-gas incinerator stack gas.

A process provides for minimizing an amount of fuel gas utilized in an absorber off-gas incinerator and better control of emissions. The process provides for less temperature deviations in the absorber off-gas incinerator firebox and for less deviation in an amount of oxygen in the absorber off-gas incinerator stack gas.

The present invention relates to a method for producing an oxide catalyst containing Mo, V, Sb, and Nb, the method including a raw material preparation step of obtaining an aqueous mixed liquid containing Mo, V, Sb, and Nb, an aging step of subjecting the aqueous mixed liquid to aging at more than 30° C., a drying step of drying the aqueous mixed liquid, thereby obtaining a dried powder, and a calcination step of calcining the dried powder, thereby obtaining the oxide catalyst, and a method for producing an unsaturated nitrile or an unsaturated acid by using the catalyst.

The present invention relates to a method for producing an oxide catalyst containing Mo, V, Sb, and Nb, the method including a raw material preparation step of obtaining an aqueous mixed liquid containing Mo, V, Sb, and Nb, an aging step of subjecting the aqueous mixed liquid to aging at more than 30° C., a drying step of drying the aqueous mixed liquid, thereby obtaining a dried powder, and a calcination step of calcining the dried powder, thereby obtaining the oxide catalyst, and a method for producing an unsaturated nitrile or an unsaturated acid by using the catalyst.

The present invention relates to a method for producing an oxide catalyst containing Mo, V, Sb, and Nb, the method including a raw material preparation step of obtaining an aqueous mixed liquid containing Mo, V, Sb, and Nb, an aging step of subjecting the aqueous mixed liquid to aging at more than 30° C., a drying step of drying the aqueous mixed liquid, thereby obtaining a dried powder, and a calcination step of calcining the dried powder, thereby obtaining the oxide catalyst, and a method for producing an unsaturated nitrile or an unsaturated acid by using the catalyst.

The present disclosure relates to an ammoxidation catalyst that exhibits excellent activity, reaction conversion rate and selectivity for the ammoxidation reaction of propylene while exhibiting improved stability under a high temperature, and a method for preparing the same, and a method for preparing acrylonitrile using the ammoxidation catalyst.

The present disclosure relates to an ammoxidation catalyst that exhibits excellent activity, reaction conversion rate and selectivity for the ammoxidation reaction of propylene while exhibiting improved stability under a high temperature, and a method for preparing the same, and a method for preparing acrylonitrile using the ammoxidation catalyst.

A reactor system and a process for carrying out the reaction of a feed gas comprising an alkane such as methane, and ammonia to hydrogen cyanide and/or a nitrile are provided, where the heat for the endothermic reaction is provided by resistance heating. In particular, the reaction is the BMA (Blausäure aus Methan und Ammoniak) reaction.

A reactor system and a process for carrying out the reaction of a feed gas comprising an alkane such as methane, and ammonia to hydrogen cyanide and/or a nitrile are provided, where the heat for the endothermic reaction is provided by resistance heating. In particular, the reaction is the BMA (Blausäure aus Methan und Ammoniak) reaction.

The present disclosure relates to a process for stabilizing an antimony ammoxidation catalyst in an ammoxidation process. The process may comprise providing an antimony ammoxidation catalyst to a reactor; reacting propylene with ammonia and oxygen in the fluidized bed reactor in the presence of the antimony ammoxidation catalyst to form a crude acrylonitrile product; and adding an effective amount of an antimony-containing compound to the antimony ammoxidation catalyst to maintain catalyst conversion and selectivity; wherein the antimony-containing compound has a melting point less than 375° C. The present disclosure also relates to catalyst compositions and additional processes using the antimony ammoxidation catalyst stabilized by an antimony-containing compound.