Polynary Metal Vanadium Oxide Phosphate

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a novel class of multi-metal vanadium oxide phosphates, specifically of the general formula MaV2Ob(PO4)c, where M is a metal selected from a defined group. These compounds have a particular crystalline structure and are especially effective as heterogeneous catalysts for gas-phase oxidation reactions. Preferred variants include CoV2O2(PO4)2, NiV2O2(PO4)2, and CuV2O2(PO4)2. Their primary application is as catalysts for the selective oxidation of hydrocarbons, such as converting n-butane to maleic anhydride, a key industrial chemical.

Use CasesContent extracted from patent full text and abstract with AI.

• Catalytic production of maleic anhydride from n-butane or other C4+ hydrocarbons in the chemical industry.
• Partial oxidation processes for other hydrocarbons to produce value-added chemicals.
• Ammonoxidation reactions for producing nitriles from hydrocarbon and ammonia feedstocks.
• Modification or enhancement of existing vanadyl pyrophosphate-based catalysts for improved performance.
• Use in structured reactors (such as fixed bed or fluidized bed reactors) for efficient large-scale chemical synthesis.
• Production of intermediates for resins, polymers, and plasticizers.

BenefitsContent extracted from patent full text and abstract with AI.

• The novel catalysts exhibit improved selectivity and efficiency compared to traditional vanadium phosphate catalysts, particularly for maleic anhydride production.
• Reduced formation of undesirable side-products, leading to higher yields and process efficiency.
• Potential for enhanced catalyst stability and longer operational life.
• Flexibility in catalyst composition by selecting different metals for M, enabling fine-tuning of catalytic properties.
• Adaptability to various manufacturing processes due to alternative synthesis and catalyst shaping methods.
• Opportunity to modify or enhance existing catalyst systems to improve conversion rates or selectivity, representing process optimization and cost-saving potential.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a novel polynary metal oxide phosphate of general formula MaV2Ob(PO4)c (I), wherein M represents one or more metals selected from the group including V, Cr, Fe, Co, Ni, Ru, Rh, Pd, Cu, Zn, Cd, Hg, Be, Mg, Ca, Sr and Ba, a has a value of 0.5 to 1.5, b has a value of 1.5 to 2.5, c has a value of 1.5 to 2.5, said novel compound having a crystal structure and being characterized by defined diffraction reflexes in powder X-ray diffraction. Preferred representatives are CoV2O2(PO4)2, NiV2O2(PO4)2 or CuV2O2(PO4)2. The metal oxide phosphates are suitable as gas phase oxidation catalysts, e.g. for producing maleic anhydride from a hydrocarbon with at least four carbon atoms.