Non-loaded type deep-hydrogenation catalyst and preparation method thereof

A deep hydrogenation and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. The problem of long solid-phase reaction time, etc., can improve the hydrogenation activity and anti-carbon deposition ability, shorten the preparation cycle, and enhance the anti-sintering ability.

Active Publication Date: 2016-03-02
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst preparation process will pollute the environment, and the preparation process is cumbersome, which is also a disadvantage that cannot be ignored in the above catalyst preparation methods.
In CN101255357, the method for preparing non-supported catalyst by solid-phase reaction method, although the method can improve the metal utilization rate, the solid-phase reaction time is long, and it needs to be used after deep grinding of the reactant, so this method is not suitable for large-scale production in industry. Catalyst production at scale
US6534437 and US6566296 disclose a method for preparing a bulk catalyst, a mixed metal oxide is obtained by hydrothermal synthesis, which is used to prepare a hydrogenation catalyst, but the metal utilization rate is low
In addition, there are also domestic reports on the preparation of hydrogenation catalysts by the sol-gel method. Compared with the above preparation methods, it is found that the cumbersome steps are not conducive to the industrial application of this type of catalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 0.14mol of nickel nitrate and 0.004mol of ammonium heptamolybdate to 30mL of deionized water at the same time, stir at 20°C to completely dissolve the nickel source and molybdenum source, then add 0.02mol of aluminum nitrate to the system, stir and dissolve, and then add 0.05 mol of aluminum nitrate to the system. 30 ml of deionized aqueous solution of mol ethanolamine was added dropwise to the above solution, the dropwise addition was completed, the pH of the system was 5.5, and the mixture was stirred at the same temperature for 1.0 h. Finally, the obtained mixed solution was poured into the reaction kettle and treated at 100 ° C for 6 hours. Subsequently, the reaction kettle was cooled to room temperature, the product was suction filtered, and dried at 120° C. for 12 h to obtain the target product. The mass percentage of each metal component in the catalyst is Ni is 71.8%, Mo is 23.5%, and the balance is auxiliary active components. The nitrogen adsorption result...

Embodiment 2

[0033] Add 0.14mol nickel nitrate and 0.005mol ammonium heptamolybdate to 30mL deionized water at the same time, stir at 30°C to completely dissolve the nickel source and molybdenum source, then add 0.01mol aluminum nitrate to the system, stir and dissolve, and then add 0.065 39 ml of deionized aqueous solution of mol ethanolamine was added dropwise to the above solution, the dropwise addition was completed, the pH of the system was 5.0, and the mixture was stirred at the same temperature for 1.0 h. Finally, the obtained mixed solution was poured into the reaction kettle and treated at 100 ° C for 6 hours. Subsequently, the reaction kettle was cooled to room temperature, the product was suction filtered, and dried at 100 °C for 24 h to obtain the target product. The mass percentage of each metal component in the catalyst is Ni is 69.3%, Mo is 28.4%, and the balance is auxiliary active components. The nitrogen adsorption results show that the mesopore diameter is 5.2nm and the ...

Embodiment 3

[0035] Add 0.14mol nickel nitrate and 0.004mol ammonium heptamolybdate simultaneously into 30mL deionized water at 30°C and stir to completely dissolve the nickel source and molybdenum source, then add 0.01mol aluminum nitrate and 0.01mol ferric nitrate to the system, stir and dissolve, Then 30ml of deionized aqueous solution containing 0.05mol of ethanolamine was added dropwise to the above solution, the dropwise addition was completed, the pH of the system was 7.0, and the stirring was continued for 0.5h at room temperature. Finally, the obtained mixed solution was poured into the reaction kettle at 150°C The crystallization treatment was carried out for 10 hours. Subsequently, the reaction kettle was cooled to room temperature, the product was suction filtered, and dried at 150° C. for 12 h to obtain the target product. The mass percentage of each metal component in the catalyst is Ni is 70.1%, Mo is 22.9%, and the balance is auxiliary active components. The nitrogen adsor...

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Abstract

The invention relates to a non-loaded type deep-hydrogenation catalyst and a preparation method thereof, and belongs to the field of catalyst preparation. The catalyst takes Ni and Mo as main active components and one or more of Zr, Zn, Al and Fe as an auxiliary active component; through BET-method determination, the catalyst has a mesoporous structure, and has the mesoporous diameter of 5.0-7.0 nm and the specific surface area of 100-300 m<2>/g. With combination of characteristics of simple operation of a precipitation method and catalyst thermal stability improvement of a hydrothermal synthesis method, the defects of long period, low metal utilization rate and high cost are overcome, the obtained catalyst not only has more metal active sites, but also has the hydrothermal stability improved. In the preparation process of the catalyst, no other binders are used, the preparation process is simplified, and the cost of the catalyst is reduced.

Description

technical field [0001] The invention relates to a non-loaded deep hydrogenation catalyst and a preparation method thereof, belonging to the field of catalyst preparation. Specifically, it relates to a non-supported deep hydrogenation catalyst prepared by precipitation crystallization method, which has a large specific surface area, more active sites, adjustable distribution ratio of main active components and mesoporous structure and its Preparation. Background technique [0002] With the gradual improvement of international environmental protection standards and the increasingly inferior quality of crude oil in the world, how to solve the contradiction between the two has become a hot spot of research at home and abroad. At the same time, in order to improve the quality of oil products, reduce the emission of motor vehicle exhaust pollutants, and slow down air pollution, the domestic and foreign standards for sulfur content in gasoline and diesel have been raised to below ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J23/887C10G45/08
Inventor 王小燕郭振莲李新姜海英姜雪丽韩立霞
Owner CHAMBROAD CHEM IND RES INST CO LTD
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