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Crystalline transition metal tungstate

A transition metal, tungstate technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical/physical process, physical/chemical process catalysts, etc., can solve problems such as questions about the quality of material structure evaluation

Active Publication Date: 2021-01-12
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Pezerat classified the observed different phases as Φc, Φx, or Φy, and determined the crystal structures of Φx and Φy, however, due to the combination of small crystallite size, limited crystallographic capabilities, and the complex nature of the substance, it is proposed that Doubts about the quality of the structural assessment of the substance

Method used

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  • Crystalline transition metal tungstate
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  • Crystalline transition metal tungstate

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Ammonium metatungstate hydrate (17.68 g, 0.07 moles of W) and ammonium carbonate (24 g, 0.25 moles) were thoroughly mixed together in a sealed container at room temperature for 24 hours. Add nickel nitrate hexahydrate (29.1 g, 0.1 moles of Ni) and DI H 2 O (5 g), and the resulting mixture was continuously mixed at room temperature for 24 hours, then heat treated at 95° C. in an open vessel for 24 hours with intermittent mixing. After 24 hours, the materials were mixed into a fine powder and dried at 100 °C for an additional 24 hours. The resulting product was analyzed by X-ray powder diffraction, and the X-ray powder diffraction pattern is shown in the accompanying drawing.

Embodiment 2

[0061] Nickel nitrate hexahydrate (20 g, 0.069 mol), ammonium metatungstate hydrate (25.2 g, 0.1 mol of W), ammonium carbonate (24 g, 0.25 mol) and deionized (DI) water (5 g) were incubated at room temperature for 24 hours. Mix together thoroughly. The resulting mixture was transferred to a PTFE-lined stainless steel digestion vessel, followed by heat treatment at 105 °C for 72 hours. The product was then dried for a further 24 hours at 110°C. The resulting product was analyzed by X-ray powder diffraction, and the X-ray powder diffraction pattern is shown in the accompanying drawing.

Embodiment 3

[0063] Ammonium metatungstate hydrate (20.16 g, 0.08 moles of W) and ammonium carbonate (24 g, 0.5 moles of NH 3 ) were mixed well together for 24 hours in a PTFE-lined stainless steel digestion vessel. After that, nickel nitrate hexahydrate (29 g, 0.1 mole of Ni) and zinc nitrate hexahydrate (2.97 g, 0.01 mole of Zn) were added to the mixture. The resulting slurry was then heat treated at 90°C for 24 hours and then dried at 100°C for an additional 24 hours. The resulting product was analyzed by X-ray powder diffraction, and the X-ray powder diffraction pattern is shown in the accompanying drawing.

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Abstract

A hydroprocessing catalyst or catalyst precursor has been developed. The catalyst is a crystalline transition metal tungstate material or metal sulfides derived therefrom. The hydroprocessing using the crystalline ammonia transition metal tungstate material may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

Description

technical field [0001] The present invention relates to a new catalyst such as a hydrotreating catalyst. More specifically, the present invention relates to a crystalline transition metal tungstate and its use as a hydrotreating catalyst. Hydrotreating may include hydrodenitrogenation, hydrodesulfurization, hydrodemetallization, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofinishing, and hydrocracking. Background technique [0002] To meet the increasing demand for petroleum products, there is a greater utilization of sour crude oils, which, when combined with stricter environmental regulations regarding nitrogen and sulfur concentrations in fuels, leads to exacerbated refining problems. The purpose during the refining hydrotreating step is to remove sulfur-containing (hydrodesulfurization-HDS) and nitrogen-containing (hydrodenitrogenation-HDN) compounds from the fuel feedstock, and this purpose is achieved by converting organic nitrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/16B01J23/06B01J23/30B01J23/888B01J21/00B01J35/00B01J37/04
CPCC10G45/08C01P2002/72C01P2002/74C01G53/006B01J37/10B01J23/888B01J37/088B01J37/20B01J23/30B01J37/0009B01J23/34B01J2523/00B01J2235/15B01J35/70B01J2523/27B01J2523/69B01J2523/847B01J27/24B01J21/08B01J21/12B01J21/04
Inventor 斯图尔特·R·米勒苏珊·C·科斯特
Owner UOP LLC
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