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Carrier containing dual-molecular sieves, catalyst containing dual-molecular sieves and preparation methods and application of carrier and catalyst

A double molecular sieve, molecular sieve technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as unfavorable material transmission, complex preparation process, inability to connect pores, etc., to improve the reaction rate, high catalysis The effect of cracking activity, high catalytic cracking performance

Active Publication Date: 2018-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, although the SBA-15 / Y composite molecular sieve has a mesoporous structure as a whole, the matching degree between the mesoporous SBA-15-microporous Y in different channels in the composite molecular sieve is poor, which is not conducive to the transmission of materials. The pores of 15 / Y composite molecular sieve and amorphous silica-alumina cannot be connected, and cannot really play the role of channels. In addition, there are problems such as complicated preparation process and high cost.

Method used

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  • Carrier containing dual-molecular sieves, catalyst containing dual-molecular sieves and preparation methods and application of carrier and catalyst
  • Carrier containing dual-molecular sieves, catalyst containing dual-molecular sieves and preparation methods and application of carrier and catalyst
  • Carrier containing dual-molecular sieves, catalyst containing dual-molecular sieves and preparation methods and application of carrier and catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Take commercially available NH 4 NaY molecular sieve (relative crystallinity 92%, unit cell constant 2.469nm, SiO 2 / Al 2 o 3 =5.1, Na 2 O=2.5w%, dry basis is 80%) 300g is placed in the hydrothermal treatment furnace, the temperature is raised by power supply, the hydrothermal treatment temperature is raised to 580°C, and the pressure of the control system (water vapor partial pressure P H2O and ammonia partial pressure P NH3 sum) at 0.1MPa, P NH3 / (P NH3 +P H2O )=0.25; carry out hydrothermal treatment for 2.5 hours. Take 100 g of the molecular sieve sample after hydrothermal treatment and use 0.3M nitric acid and 1.8M NH 4 NO 3 0.8L of the mixed solution was chemically dealuminated at 95°C for 1.5 hours, filtered with suction, and the reaction was repeated once under the same conditions, the filter cake was washed until the pH of the filtrate = 6.8, and the filter cake was dried at 120°C until the dry basis = 80%, and the present invention was obtained. The m...

Embodiment 2

[0024] Take commercially available NH 4 NaY molecular sieve (relative crystallinity 92%, unit cell constant 2.469nm, SiO 2 / Al 2 o 3 =5.1, Na 2 O=2.5w%, dry basis is 80%) 600g is placed in the hydrothermal treatment furnace, the temperature is raised by power supply, the hydrothermal treatment temperature is raised to 630°C, and the pressure of the control system (water vapor partial pressure P H2O and ammonia partial pressure P NH3 sum) at 0.08MPa, P NH3 / (P NH3 +P H2O )=0.3; carry out hydrothermal treatment for 2.0 hours. Take 200 g of the molecular sieve sample after hydrothermal treatment and use 0.1M nitric acid and 2.0M NH 4 NO 3 2L of the mixed solution was subjected to chemical dealumination reaction at 90°C for 1.0 hour, suction filtered, and the reaction was repeated twice under the same conditions, the filter cake was washed until the pH of the filtrate = 6.5, and the filter cake was dried at 120°C until the dry basis = 80%, to obtain the present invention ...

Embodiment 3

[0028] Take commercially available triblock copolymer P123 as a template, orthosilicate as a silicon source, and 300 g of pure silicon mesoporous molecular sieve SBA-15 former powder hydrothermally synthesized under acidic conditions as the mesoporous powder used in the present invention. Molecular sieve D. Its properties (detected after roasting to remove template agent) are as follows: pore diameter 11.2nm, pore volume ≥ 0.82ml / g, specific surface 783m 2 / g.

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Abstract

The invention provides a carrier containing dual-molecular sieves, a catalyst containing dual-molecular sieves and preparation methods and application of the carrier and the catalyst. The carrier is prepared from 48.5wt%-89.9wt% of a modified Y molecular sieve, 0.1wt%-1.5wt% of an SBA-15 molecular sieve and 10wt%-50wt% of aluminum oxide by weight of the carrier; the catalyst is prepared from 28.5wt%-74.9wt% of the modified Y molecular sieve and 0.1wt%-1.5wt% of an SBA-15 mesoporous molecular sieve by weight of the catalyst; and group VIB metal accounts for 10.0-25.0wt% in terms of its oxides,group VIII metal accounts for 3.0-8.0wt% in terms of its oxides, and the aluminum oxide accounts for 10-30wt%. The carrier is especially suitable for preparing a light oil type hydrocracking catalystand has high catalytic cracking activity and high target product selectivity.

Description

technical field [0001] The invention relates to a carrier and catalyst containing bimolecular sieves, a preparation method and application thereof, in particular to a carrier and catalyst containing bimolecular sieves, a preparation method thereof and an application for producing light distillate oil. technical background [0002] With the gradual realization of the Chinese dream, people's quality of life is getting higher and higher. While the demand for light fuel oil is increasing day by day, the requirements for clean fuel oil are also becoming increasingly stringent. The quantity and quality of petroleum primary processing can not meet people's needs. The secondary processing of heavy distillate oil into high-quality light fuel through hydrocracking process not only makes full use of limited petroleum resources, but also relieves the pressure of light distillate oil. market demand, and the product is of high quality and environmentally friendly. The key to hydrocrackin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/14B01J29/16C10G45/12
CPCC10G45/12B01J29/005B01J29/0333B01J29/0341B01J29/146B01J29/166C10G2300/1059C10G2300/1055C10G2300/202B01J35/615B01J35/635
Inventor 阮彩安杜艳泽秦波柳伟张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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