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A kind of preparation method of two-dimensional porous titanium dioxide nanosheet

A nanosheet, catalytic oxidation technology, applied in the preparation/purification of titanium dioxide, sulfur, chemical instruments and methods, etc., can solve the problem of not being able to have a sheet structure and a pore structure at the same time, and achieve the effect of accelerating mass transfer efficiency

Active Publication Date: 2022-04-01
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a two-dimensional porous TiO 2 The preparation method of nanosheet, which can solve the problem of existing TiO 2 The problem that the catalyst cannot have a sheet structure and a pore structure at the same time

Method used

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  • A kind of preparation method of two-dimensional porous titanium dioxide nanosheet
  • A kind of preparation method of two-dimensional porous titanium dioxide nanosheet
  • A kind of preparation method of two-dimensional porous titanium dioxide nanosheet

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 0.4968 g polyether F127 (M W ≈12600 mol·g -1 ) and 0.9896g of polyvinylpyrrolidone (PVP) were added to a mixed solution consisting of 15 mL of tetrahydrofuran, 15 mL of dichloromethane, 2.4118 g of glacial acetic acid and 3.5164 g of concentrated hydrochloric acid. After stirring for 10 min, 3.4212 g of tetrachloromethane was added dropwise Titanium chloride, continue to stir for 5 min after the dropwise addition, then add 0.2 g of distilled water dropwise to obtain a red solution, place the obtained red solution in an oven at 40 °C for 24 h to obtain a white gel; weigh 1.0324 g of the obtained gel and add into 30 mL of glycerol / ethanol solvent (the volume ratio of glycerol to ethanol is 1:2), and after vigorously stirring for 10 min, the resulting colorless and clear solution was transferred to the lining of a 50 mL hydrothermal kettle, and heated at 150 °C Hydrothermal treatment for 15 h, after hydrothermal treatment, at 10000 rpm·h -1 The white precipitate was obta...

Embodiment 2

[0031] 0.5016 g polyether F127 (M W ≈12600 mol·g -1 ) and 1.0235 g of polyvinylpyrrolidone (PVP) were added to a mixed solution consisting of 15 mL of tetrahydrofuran, 15 mL of dichloromethane, 2.4243 g of glacial acetic acid and 3.4989 g of concentrated hydrochloric acid. After stirring for 10 min, 3.4169 g of tetrachloromethane was added dropwise Titanium chloride, continue to stir for 5 min after the dropwise addition, then add 0.2 g of distilled water dropwise to obtain a red solution, place the obtained red solution in an oven at 40 °C for 24 h to obtain a white gel; weigh 1.1205 g of the obtained gel and add into 30 mL of glycerol / ethanol solvent (the volume ratio of glycerol to ethanol is 1:5), and after vigorously stirring for 10 min, the resulting colorless and clear solution was transferred to the lining of a 50 mL hydrothermal kettle, and heated at 150 °C Hydrothermal treatment for 15 h, after hydrothermal treatment, at 10000 rpm·h -1 The white precipitate was obt...

Embodiment 3

[0033] 0.4896 g polyether F127 (M W ≈12600 mol·g -1 ) and 1.0358g of polyvinylpyrrolidone (PVP) were added to a mixed solution consisting of 15 mL of tetrahydrofuran, 15 mL of dichloromethane, 2.4268 g of glacial acetic acid and 3.4936 g of concentrated hydrochloric acid. After stirring for 10 min, 3.4023 g of tetrachloromethane was added dropwise Titanium chloride, continue to stir for 5 min after the dropwise addition, then add 0.2 g of distilled water dropwise to obtain a red solution, place the obtained red solution in an oven at 40 °C for 24 h to obtain a white gel; weigh 1.0561 g of the obtained gel and add into 30 mL of glycerol / ethanol solvent (the volume ratio of glycerol to ethanol is 1:7), and after vigorously stirring for 10 min, the resulting colorless and clear solution was transferred to the lining of a 50 mL hydrothermal kettle, and heated at 150 °C Hydrothermal treatment for 15 h, after hydrothermal treatment, at 10000 rpm·h -1 The white precipitate was obta...

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Abstract

The invention discloses a two-dimensional porous TiO 2 A method for preparing nanosheets, which uses a sol-gel method to prepare porous TiO 2 precursor, followed by hydrothermal synthesis of TiO 2 , and then calcined to remove the pore-forming agent, the two-dimensional porous TiO 2 Nanosheets. The method of the invention has strong repeatability, mild hydrothermal conditions, and the prepared TiO 2 The morphology of the nanosheets is regular, and its porous structure exposes abundant active sites, which can improve the mass transfer efficiency, and can be used in the selective catalytic oxidation of H 2 It has good catalytic activity in S reaction.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, in particular to a two-dimensional porous TiO 2 Preparation methods of nanosheets. Background technique [0002] h 2 S is a common flammable, highly toxic and highly corrosive gas, which is commonly found in industrial production processes such as petroleum cracking, natural gas extraction, food processing and coal resource utilization. h 2 The acidic characteristics of S will not only corrode chemical equipment and poison catalysts, increase input costs and reduce product quality, but also cause damage to the ecological environment and harm human health. With the national environmental protection law on H 2 S emission standards are becoming increasingly stringent, how to efficiently remove H 2 S At the same time, effectively solving the recycling of sulfur resources is one of the problems to be solved in the development process of industrial production and environmental protection. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J35/10B01J37/10B01J37/03C01B17/04C01G23/08B82Y30/00B82Y40/00
CPCB01J21/063B01J37/0018B01J37/10B01J37/036C01B17/0434C01B17/0465C01G23/08B82Y30/00B82Y40/00C01P2004/20C01P2004/64C01P2002/72C01P2004/03C01P2006/12C01P2006/16B01J35/40B01J35/613B01J35/647
Inventor 曹彦宁姚争沈丽娟梁诗景江莉龙
Owner FUZHOU UNIV
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