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A kind of nay type molecular sieve and preparation method thereof

A molecular sieve and micro-reactor technology, applied in the direction of crystalline aluminosilicate zeolite, octahedral crystalline aluminosilicate zeolite, etc., can solve the problem of large molecular sieve grains, achieve large specific surface area, high crystallinity, and complete grains Effect

Active Publication Date: 2020-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effective pore size distribution of the molecular sieve is concentrated, and the pore volume occupied by pores with a pore diameter of 1-10 nm is 70%-90% of the total pore volume, but the crystal grains of the molecular sieve prepared by this method are too large, 2.0-5.0 μm

Method used

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  • A kind of nay type molecular sieve and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of guiding agent: Dissolve 8g of sodium hydroxide solid in 80g of water, add 2.5g of sodium metaaluminate (Al 2 o 3 Content is 45wt%, Na 2 O content is 41wt%), then add 40g water glass (SiO 2 The content is 28wt%, Na 2 The O content is 8wt%), mixed evenly, and aged at 18°C ​​for 4 hours to prepare the directing agent.

[0056] NaAlO with a concentration of 30g / 100mL 2 with 135g / 100ml of Na 2 SiO 3 mixed solution and 50g / 100mL of Al 2 (SO 4 ) 3 Add the mixed solution of the solution and 180g / 100ml silicic acid solution into the respective component tanks, put each raw material tank, the first impingement flow microreactor and other microreactors into the oil bath, put the raw material tank and the second Heat the first impingement flow reactor to 90°C, turn on the booster pumps of the two component tanks, and simultaneously enter the alkaline solution and the acidic solution into the first impingement flow reactor through the atomizer, and control th...

Embodiment 2

[0058] Preparation of guiding agent: Dissolve 10g of sodium hydroxide solid in 90g of water, add 3g of sodium metaaluminate (Al 2 o 3 Content is 45wt%, Na 2 O content is 41wt%), then add 50g water glass (SiO 2 The content is 28wt%, Na 2 O content is 8wt%), mixed evenly and aged at 20°C for 3h to prepare the directing agent.

[0059] NaAlO with a concentration of 20g / 100mL2 with 120g / 100ml of Na 2 SiO 3 mixed solution and 20g / 100mL of Al 2 (SO 4 ) 3 Add the mixed solution of the solution and 145g / 100ml silicic acid solution into the respective component tanks, put each raw material tank, the first impingement flow microreactor and other microreactors into the oil bath, put the raw material tank and the second Heat the first impingement flow reactor to 110°C, turn on the booster pumps of the two component tanks, and simultaneously enter the alkaline solution and the acidic solution into the first impingement flow reactor through the atomizer, and control the flow rate of...

Embodiment 3

[0061] Preparation of guiding agent: Dissolve 10g of sodium hydroxide solid in 90g of water, add 3g of sodium metaaluminate (Al 2 o 3 Content is 45wt%, Na 2 O content is 41wt%), then add 50g water glass (SiO 2 The content is 28wt%, Na 2 O content is 8wt%), mixed evenly and aged at 20°C for 3h to prepare the directing agent.

[0062] NaAlO with a concentration of 20g / 100mL 2 With 130g / 100ml of Na 2 SiO 3 mixed solution and 20g / 100mL of Al 2 (SO 4 ) 3 The mixed solution of the solution and 120g / 100ml silicic acid solution is added to the respective component tanks, each raw material tank, the first impingement flow microreactor and other microreactors are put into the oil bath, the raw material tank and the second Heat the first impingement flow reactor to 120°C, turn on the booster pumps of the two component tanks, and simultaneously enter the alkaline solution and the acidic solution into the first impingement flow reactor through the atomizer, and control the flow ra...

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Abstract

The invention discloses a NaY type molecular sieve and a preparation method thereof. The preparation method comprises the steps of preparation of a guiding agent, preparation and crystallization of silica-alumina gel, wherein a reaction system adopted by the preparation and crystallization of the silica-alumina gel comprises N microreactors connected in series. The NaY type molecular sieve has theadvantages of high purity, high crystallinity, small particle size, very concentrated crystal particle distribution, large pore size and concentrated pore size distribution, and the preparation method has the advantages of safety, environmental protection, short reaction time, high process continuation efficiency, elimination of the amplification effect, and suitableness for gasoline and diesel hydrocracking catalyst carrier materials.

Description

technical field [0001] The invention relates to a NaY type molecular sieve and a preparation method thereof. Background technique [0002] In recent years, microreactors have attracted great academic and commercial interest from researchers in many fields. This interest arises from the following characteristics of microtechnology, including reduced size, increased productivity, scaling up of systems to any desired production capacity (ie "scaling up"), increased heat transfer and increased mass transfer. Some work involving microreactors is reviewed by Gavilidis et al. in "Technology And Applications Of Microengineered Reactors" Trans. IchemE, Vol. 80, Part A, pp. 3-30 (January 2002). Microreactor is a chemical reaction system with a unit reaction interface width of micron level. It is a microchemical technology that emerged in the 1990s. Since deMello and colleagues reported the prediction and advantages of microreactors in the preparation of nanoparticles in 2002, microc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/24
Inventor 吕振辉薛冬隋宝宽彭冲彭绍忠
Owner CHINA PETROLEUM & CHEM CORP
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