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High efficiency ammoxidation process and mixed metal oxide catalysts

A catalyst and oxide technology, applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrocarbon ammoxidation preparation, etc., can solve complex problems

Active Publication Date: 2013-01-23
INEOS EURO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, more complex and multi-step preparations have been used

Method used

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  • High efficiency ammoxidation process and mixed metal oxide catalysts
  • High efficiency ammoxidation process and mixed metal oxide catalysts
  • High efficiency ammoxidation process and mixed metal oxide catalysts

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specific Embodiment approach

[0139] To illustrate the present invention, catalysts prepared according to the present invention were evaluated and compared under similar reaction conditions with similar catalysts prepared by prior art methods outside the scope of the present invention. These examples are provided for illustrative purposes only.

[0140] Composition Cs was prepared by various preparation methods as described below 0.1 K 0.1 Ni 5 Mg 2 Na 0.05 Fe 1.8 Bi 0.45 Ce 1.1 Mo 12.55 o 50.35 +45wt%NaSiO 2 and tested for the ammoxidation of propylene to acrylonitrile in a laboratory-scale reactor. All tests were performed in a 40cc fluidized bed reactor. Propylene was fed to the reactor at a rate of 0.06 WWH (ie weight propylene / weight catalyst / hour). The pressure in the reactor was maintained at 10 psig. The propylene / ammonia / air molar ratio is approximately 1 / 1.2 / 9.5. The reaction temperature is 430°C. After a stable period of ~20+ hours, a sample of the reaction product was collected. ...

Embodiment 1

[0155] Embodiment 1: Prepared according to the present invention

[0156] Reaction mixture A was prepared by heating 198 ml of deionized water to 65°C and then adding ammonium heptamolybdate (180.4 g) with stirring over 30 minutes to form a clear colorless solution. Silica sol (692 g, 32.5 wt% silica) was then added with stirring.

[0157] Heat 33ml of deionized water to 55°C, then add Fe(NO 3 ) 3 9H 2 O(73.6g), Ni(NO 3 ) 2 ·6H 2O(147.1g) and Mg(NO 3 ) 2 ·6H 2 O (51.9 g), to prepare reaction mixture B.

[0158] Reaction mixture C was prepared by heating 48ml of deionized water to 65°C and then adding ammonium heptamolybdate (43.75g) with stirring over 30 minutes to form a clear colorless solution.

[0159] By (i) 122.0g 50wt% (NH 4 ) 2 Ce(NO 3 ) 6 The aqueous solution was heated to 55°C, and (ii) while stirring and heating the solution, Bi(NO 3 ) 3 ·5H 2 O (22.1g), CsNO 3 (1.97g), KNO 3 (1.02g) and NaNO 3 (0.43 g), forming a clear orange solution to prepare...

Embodiment 2

[0164] Embodiment 2: Prepared according to the present invention

[0165] Reaction mixture A was prepared by heating 198 ml of deionized water to 65°C and then adding ammonium heptamolybdate (180.4 g) with stirring over 30 minutes to form a clear colorless solution.

[0166] Heat 33ml of deionized water to 55°C, then add Fe(NO 3 ) 3 9H 2 O(73.6g), Ni(NO 3 ) 2 ·6H 2 O(147.1g) and Mg(NO 3 ) 2 ·6H 2 O (51.9 g), to prepare reaction mixture B.

[0167] Reaction mixture C was prepared by heating 48ml of deionized water to 65°C and then adding ammonium heptamolybdate (43.75g) with stirring over 30 minutes to form a clear colorless solution.

[0168] By (i) 122.0g 50wt% (NH 4 ) 2 Ce(NO 3 ) 6 The aqueous solution was heated to 55°C, and (ii) while stirring and heating the solution, Bi(NO 3 ) 3 ·5H 2 O (22.1g), CsNO 3 (1.97g), KNO 3 (1.02g) and NaNO 3 (0..43 g), forming a clear orange solution, to prepare reaction mixture D.

[0169] Reaction mixture B was added to r...

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PUM

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Abstract

A process and novel catalyst for the production of acrylonitrile, acetonitrile and hydrogen cyanide characterized by the relative yields of acrylonitrile, acetonitrile and hydrogen cyanide produced in the process and by the catalyst, which are defined by the following: a = [(%AN + (3 * %HCN) + (1.5 * %ACN)) %PC] * 100 wherein: %AN is the Acrylonitrile Yield and %AN = 81, %HCN is the Hydrogen Cyanide Yield, %ACN is the Acetonitrile Yield, %PC is the Propylene Conversion, and a is greater than 100.

Description

[0001] References to related applications [0002] This application is a continuation-in-part of U.S. Patent Application Serial No. 12 / 661,716, filed March 23, 2010, entitled "Process for Preparing Improved Mixed Metal Oxide Ammoxidation Catalysts" Improved Mixed Metal Oxide Ammoxidation Catalysts). technical field [0003] This invention relates to a method and catalyst for the ammoxidation of unsaturated hydrocarbons to the corresponding unsaturated nitriles. In particular, the present invention relates to a process and catalyst for the ammoxidation of propylene to acrylonitrile, hydrogen cyanide and acetonitrile. Background technique [0004] Catalysts containing iron, bismuth and molybdenum oxides promoted with suitable elements have long been used for the conversion of propylene and / or isobutylene at elevated temperatures in the presence of ammonia and oxygen (usually in the form of air) to produce acrylonitrile and / or methacrylonitrile. Specifically, British Patent ...

Claims

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Application Information

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IPC IPC(8): B01J23/00B01J23/887C07C253/26B01J35/00B01J37/03
CPCB01J37/031B01J35/002B01J23/8871B01J23/8878C07C253/26B01J23/002B01J23/8876B01J2523/00Y02P20/52B01J35/30B01J2523/12B01J2523/13B01J2523/15B01J2523/22B01J2523/3712B01J2523/54B01J2523/68B01J2523/842B01J2523/847B01J2523/14B01J2523/67C07C255/03C07C255/08
Inventor 詹姆斯·F·布雷兹迪尔马克·A·托夫特查尔斯·J·贝塞克尔迈克尔·J·西利
Owner INEOS EURO LTD
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