Unlock instant, AI-driven research and patent intelligence for your innovation.

BaKL zeolite rich in mesopores and preparation method of BaKL zeolite

A zeolite and mesoporous technology, which is applied in the fields of BaKL zeolite rich in mesopores and its preparation, catalyst carrier and its preparation, can solve the problems such as the large influence of molecular sieve framework structure, and avoid the reduction of specific surface area and pore volume, The effect of increasing the number of mesopores and excellent yield of aromatics

Pending Publication Date: 2019-07-19
CNOOC TIANJIN CHEM RES & DESIGN INST +3
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of pore expansion can only obtain disordered mesopores, which has a great impact on the molecular sieve framework structure.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • BaKL zeolite rich in mesopores and preparation method of BaKL zeolite
  • BaKL zeolite rich in mesopores and preparation method of BaKL zeolite
  • BaKL zeolite rich in mesopores and preparation method of BaKL zeolite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the molar ratio of oxides, it is 6K 2 O: Al 2 o 3 :14SiO2 2 :180H 2 O: 0.06BaO was fed, stirred evenly at 25°C, and then statically aged at 35°C for 48 hours to prepare the guiding agent. The silicon source was silica sol, the aluminum source was aluminum hydroxide, the alkali source was potassium hydroxide, and the barium source was nitric acid. Barium; 4K by molar ratio of oxide 2 O: Al 2 o 3 : 16SiO 2 : 200H 2 O, the silicon source is silica sol, the aluminum source is aluminum hydroxide, the alkali source is potassium hydroxide, add polyethylene glycol-20000 and directing agent according to the mass ratio of solid matter 10% and 25% respectively, fully stir evenly, stir After 2 hours, it was transferred to a crystallization kettle, crystallized at 150°C for 48 hours, and then filtered, washed, dried, and roasted to obtain a BaKL zeolite rich in mesoporous pores, which was designated as Zeolite-1, and the mass content of Ba element was 0.3wt.%. ...

Embodiment 2

[0035] According to the molar ratio of oxides, it is 18K 2 O: Al 2 o 3 :20SiO2 2 :300H 2 O: 0.12BaO was fed, stirred evenly at 25°C, and then statically aged at 35°C for 48 hours to prepare the guiding agent. The silicon source was silica sol, the aluminum source was aluminum hydroxide, the alkali source was potassium hydroxide, and the barium source was nitric acid. Barium; 10K by molar ratio of oxide 2 O: Al 2 o 3 : 21SiO 2 : 250H 2 O, the source of silicon is silica sol, the source of aluminum is aluminum hydroxide, and the source of alkali is potassium hydroxide. Add methyl cellulose and guiding agent according to the mass ratio of solid matter at 7% and 16%, stir well, and stir for 2 hours. Transfer to a crystallization tank, crystallize at 150°C for 48 hours, filter, wash, dry, and roast to obtain a mesoporous-rich BaKL zeolite, which is recorded as Zeolite-2, and the mass content of Ba element is 0.6wt.%. Use platinum dichlorotetraammine solution to exchange wi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses BaKL zeolite rich in mesopores and a preparation method of the BaKL zeolite. The BaKL zeolite rich in mesopores is prepared by a method comprising the following steps: mixing K2O, Al2O3, SiO2, H2O and BaO into gel according to the molar ratio of (4-22.5) K2O: Al2O3: (10-25) SiO2: (180-350) H2O: (0.02-0.2) BaO, then standing for aging for 12-72 h at the temperature of 10-60DEG C to obtain a guiding agent; mixing K2O, Al2O3, SiO2 and H2O into gel according to the molar ratio of (4-12) K2O: Al2O3: (10-30) SiO2: (120-300) H2O, successively adding an organic pore-enlargingagent which accounts for 5-20% of the mass of added solid substances for synthesizing the gel and a guiding agent which accounts for 10-40% of the mass of the added solid substances for synthesizing the gel, crystallizing the gel at the temperature of 100-200 DEG C for 12-72 h, and finally filtering, washing, drying and roasting to obtain the BaKL zeolite rich in mesopores. The invention further provides a Pt / BaKL catalyst prepared by loading the BaKL zeolite with Pt through an ion exchange method, and the Pt / BaKL catalyst has excellent aromatic hydrocarbon selectivity and one-way service life.

Description

technical field [0001] The invention belongs to the field of catalyst carrier and its preparation, and in particular relates to mesoporous-rich BaKL zeolite, a preparation method thereof, and a catalyst prepared from the BaKL zeolite. Background technique [0002] L zeolite is a kind of synthetic zeolite. Its skeleton structure is composed of cancryptite cage and hexagonal column cage. The main channel is twelve-membered ring one-dimensional straight channel, and the diameter of the channel is about 0.71nm. L zeolite has unique adsorption performance and catalytic performance, and also has good thermal stability. It is a catalytic material with excellent thermal stability and has a wide range of applications. It can be used to prepare cracking, isomerization, aromatization, alkylation Catalysts for hydrocarbon conversion processes such as lube oil hydrocracking. The Pt / KL aromatization catalyst prepared by it is the most popular research direction at present. [0003] Pt / K...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B39/32B01J29/62
CPCC01B39/32B01J29/62B01J2229/18
Inventor 刘航李嘉骊苏文利臧甲忠范景新郭春垒洪鲁伟汲银平刘冠锋隋芝宇
Owner CNOOC TIANJIN CHEM RES & DESIGN INST