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Catalyzer for producing biological ethane and shaping method thereof

A molding method and catalyst technology, applied in the chemical industry, can solve problems such as unreported, and achieve the effects of simple components, improved strength and high strength

Inactive Publication Date: 2008-03-12
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports on patents that systematically describe the molecular sieve catalyst molding method for the preparation of bio-ethylene.

Method used

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  • Catalyzer for producing biological ethane and shaping method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix and knead 30g of HZSM-5 molecular sieve raw powder with a molar silicon-aluminum ratio of 25:1, 1g sodium carboxymethylcellulose, 12g phosphoric acid, and 2g water, knead them, form at 40°C for 1 hour, extrude and form them, and dry at 60°C for 15 hours , Calcined at 800°C for 6h, and then washed with water at 100°C for 30 days to obtain the shaped catalyst.

[0029] The catalyst is at a temperature of 220°C, an ethanol concentration of 50wt%, and a mass space velocity of 3.0h -1 The catalytic dehydration reaction was carried out under the reaction conditions.

Embodiment 2

[0031] Mix and knead 30g of HZSM-5 molecular sieve raw powder with a molar silicon-aluminum ratio of 50:1, 25g of silica sol, 0.9g of hydroxypropyl methylcellulose, 1g of phosphoric acid, and 7g of water, knead them, and extrude after forming at 30°C for 24 hours Shaped, dried at 100°C for 2 hours, and calcined at 550°C for 4 hours to obtain the shaped catalyst.

[0032] The catalyst is at a temperature of 250°C, an ethanol concentration of 50wt%, and a mass space velocity of 3.0h -1 The catalytic dehydration reaction was carried out under the reaction conditions.

Embodiment 3

[0034] Mix and knead 40g of HZSM-5 molecular sieve raw powder with a molar silicon-aluminum ratio of 100:1, 73g of silica sol, 12g of sodium carboxymethylcellulose, 2.4g of disodium hydrogen phosphate, and 48g of water, and knead them at 20°C for 48 hours. Extruded, dried at 120°C for 1 hour, and calcined at 650°C for 2 hours to obtain the shaped catalyst.

[0035] The catalyst is at a temperature of 280°C, an ethanol concentration of 50wt%, and a mass space velocity of 3.0h -1 The catalytic dehydration reaction was carried out under the reaction conditions.

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Abstract

The present invention relates to the chemical technical field and in detail relates to a preformed catalyst used for dehydration of ethanol to ethane and a molding and preparation method of the catalyst. For preparation of the catalyst, HZSM-5 molecular sieve initial powder is used as a main material and a bonding agent and a phosphor-containing compound is used as the promoter. The weight rate of the HZSM-5 molecular sieve initial powder and the bonding agent is 0.3-10: 1, and the weight rate of the HZSM-5 molecular sieve initial powder and the phosphor-containing compound is 2.5-60:1. The catalyst is made from the materials through the procedures of mixing, kneading, melting, molding by band-extruding, drying, calcining and so on. The catalyst is provided with the simple components, the low cost, the strong activity, the large intensity, and the long usable life. The preparation procedures of the catalyst are simple, easy for control and low in the cost. Thus, the catalyst is provided with a good prospect of industrial application.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a catalyst for preparing bio-ethylene and a molding method thereof. Background technique [0002] As the "mother of petrochemical industry", ethylene's industrial production scale, output and technical level have become an important symbol to measure the level of a country's chemical industry. At present, the industrial production of ethylene mainly comes from the pyrolysis of naphtha. However, this method not only produces a large amount of greenhouse gases and waste, leading to environmental degradation, but also uses non-renewable fossil resources as raw materials. The shortage of petroleum resources in the world has led to the increasing production cost of petroleum ethylene and the great decline of the competitiveness of the market economy. The continuous and rapid development of demand for ethylene in chemical, energy, material and other ethylene derivative indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40C07C11/04C07C1/24
CPCY02P20/52
Inventor 黄和李恒胡耀池胡燚闫婕汪洋卢进中
Owner NANJING UNIV OF TECH
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