Organic-inorganic hybridized molybdenum arsenate crystal as well as preparation method and application thereof

A molybdenum arsenate and inorganic technology, applied in the field of organic-inorganic hybrid molybdenum arsenate crystal and its preparation, can solve the problems of harsh reaction conditions, difficult catalyst recovery, pollution, etc., and achieves efficient decomposition, simple and thorough separation, Good catalytic effect

Inactive Publication Date: 2018-08-24
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide an organic-inorganic hybrid molybdenum arsenate crystal and its preparation method in order to solve the problems of severe reaction conditions, easy pollution and difficult recovery of catalysts in the preparation of ethylene glycol by hydrolysis of ethylene carbonate and application

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  • Organic-inorganic hybridized molybdenum arsenate crystal as well as preparation method and application thereof
  • Organic-inorganic hybridized molybdenum arsenate crystal as well as preparation method and application thereof
  • Organic-inorganic hybridized molybdenum arsenate crystal as well as preparation method and application thereof

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specific Embodiment approach 1

[0019] Specific implementation mode 1: In this implementation mode, the molecular formula of an organic-inorganic hybrid molybdenum arsenate crystal is C 40 h 39 Cu 4 As 3 Mo 12 N 8 o 52 , the molecular weight is 3093.99, the triclinic crystal system, the space group p-1, and the unit cell parameters are α=103.0960(10)°, β=109.0700(10)°, γ=90.3370(10)°, volume Density c =2.826Mg cm -3 , the number of molecules in the unit cell 1, R 1 =0.0546, wR 2 = 0.1450.

specific Embodiment approach 2

[0020] Specific embodiment two: In this embodiment, a method for preparing an organic-inorganic hybrid molybdenum arsenate crystal is carried out according to the following steps:

[0021] Will (NH 4 ) 6 Mo 7 o 24 4H 2 O, C 10 N 2 h 8 , NaAsO 2 , CuCl 2 2H 2 O was mixed with distilled water to obtain a mixture, stirred for 20-40min, then placed in a reactor and sealed, and the sealed reactor was placed in a drying oven, dried for 4-6 days, cooled to room temperature, then washed and dried at room temperature to obtain organic - Inorganic hybrid molybdenum arsenate crystal; wherein said (NH 4 ) 6 Mo 7 o 24 4H 2 O and NaAsO 2 The molar ratio of 0.19-0.21:1; (NH 4 ) 6 Mo 7 o 24 4H 2 O and C 10 N 2 h 8 The molar ratio is 0.345-0.351:1; (NH 4 ) 6 Mo 7 o 24 4H 2 O and CuCl 2 2H 2 The molar ratio of O is 0.269-0.275:1; (NH 4 ) 6 Mo 7 o 24 4H 2 The volume ratio of the mole of O to distilled water is 0.64mmol:18mL.

[0022] The organic-inorganic hybr...

specific Embodiment approach 3

[0023] Specific embodiment three: the difference between this embodiment and specific embodiment two is: (NH 4 ) 6 Mo 7 o 24 4H 2 O and NaAsO 2 The molar ratio is 0.2:1. Others are the same as in the second embodiment.

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Abstract

The invention provides an organic-inorganic hybridized molybdenum arsenate crystal as well as a preparation method and application thereof. The invention relates to the organic-inorganic hybridized molybdenum arsenate crystal as well as the preparation method and the application thereof, aiming at solving the problems that existing reaction conditions for preparing ethylene glycol through hydrolyzing ethylene carbonate are harsh, pollution is easily caused and a catalyst is not easy to recycle. The preparation method comprises the following steps: mixing (NH4)6Mo7O24.4H2O, C10N2H8, NaAsO2 andCuCl2.2H2O; adding a mixture into distilled water and stirring; sealing and putting into a baking oven for heating; cooling at room temperature; finally, washing with distilled water and drying at room temperature to prepare a product. The organic-inorganic hybridized molybdenum arsenate crystal is used as the catalyst and is used for an ester hydrolysis process under normal pressure; the catalystis easy to separate. The crystal prepared by the preparation method can be used as the catalyst and is used for catalyzing ester hydrolysis; ester is not adsorbed and efficient hydrolysis of the ester under the normal pressure is realized. The organic-inorganic hybridized molybdenum arsenate crystal is applied to the field of preparation of the catalyst.

Description

technical field [0001] The invention relates to an organic-inorganic hybrid molybdenum arsenate crystal and its preparation method and application. Background technique [0002] Ethylene glycol is a chemical raw material with a wide range of uses. In recent years, the market demand for ethylene glycol has been strong. Therefore, the preparation process of ethylene glycol has attracted widespread attention in various countries, and the research and development of new processes is in the ascendant. At present, the hydrolysis of ethylene carbonate is considered to be the most promising method for industrial production of ethylene glycol, and it is a hot spot of research and development at home and abroad. It is of great industrial value and practical significance to study the process of preparing ethylene glycol by hydrolysis of ethylene carbonate, and it is a green and environmentally friendly chemical process. However, the ethylene carbonate hydrolysis method has problems su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F19/00B01J31/18C07C31/20C07C29/09
CPCB01J31/1815B01J2531/0241B01J2531/16B01J2531/52C07B2200/13C07C29/095C07F19/005C07C31/202Y02P20/52
Inventor 赵志凤高微付长璟高丽敏毕建聪
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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