Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of alkylation catalyst for generating p-methylethylbenzene and preparation method thereof

A p-methylethylbenzene and catalyst technology, which is applied in the field of alkylation catalysts for generating p-methylethylbenzene and its preparation, can solve unsatisfactory problems and achieve excellent reactivity, important application value, and high PET selective effect

Active Publication Date: 2019-09-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although some progress has been made in the research of alkylation catalysts that selectively generate p-methylethylbenzene, it is still not satisfactory
In addition, the research on molecular sieve catalysts is a highly experimental subject area, and various conclusions need to be based on experimental data. If the reasoning is based on "from one to the other" and "by analogy", it is likely to be quite different

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
  • A kind of alkylation catalyst for generating p-methylethylbenzene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Get the ZSM-5 / ZSM-11 co-crystal molecular sieve that contains 80% ZSM-5 of 150g, adopt the dilute hydrochloric acid solution of 0.3M to carry out acid treatment to it twice, solid-liquid ratio 1 / 5 (g / ml), acid treatment temperature at 75°C for 2 hours, wash the acid-treated solid product until the washing liquid is neutral, and dry at 120°C for 8 hours to obtain solid powder a1; take 100g of solid powder a1 and 41.4g of alumina, the dry basis mass percentage of the two 75%: 25%, after adding 3.5g of Selina powder (accounting for 3% of the total mass on dry basis) and mixing, then adding 70g of dilute nitric acid solution with a mass concentration of 10% (total mass ratio on dry basis is 0.6:1) to carry out Kneading and extruding into strips, drying at 110°C for 8 hours, and calcining at 540°C for 6 hours to obtain a molded product b1; impregnating b1 with cyclohexane solution of ethyl orthosilicate, drying at 100°C for 10 hours, and calcining at 530°C for 3 hours. The m...

Embodiment 2

[0021] Get the ZSM-5 / ZSM-11 co-crystal molecular sieve that contains 50%ZSM-5 of 150g, adopt the dilute nitric acid solution of 0.1M to carry out acid treatment to it twice, solid-liquid ratio 1 / 10 (g / ml), acid treatment temperature at 60°C for 3 hours, wash the acid-treated solid product until the washing liquid is neutral, and dry at 100°C for 20 hours to obtain solid powder a2; take 100g of solid powder a2 and 39g of silica sol, and the mass percentage of the two on a dry basis is 85%: 15%, after adding 4.2g of turnip powder (accounting for 4% of dry basis total mass) and mixing, then adding 42g mass concentration is 15% dilute nitric acid solution (0.4:1 with dry basis total mass ratio) for kneading , extruded, then dried at 100°C for 15 hours and roasted at 530°C for 8 hours to obtain the molded product b2; b2 was impregnated with dilute phosphoric acid solution, dried at 120°C for 4 hours, and roasted at 500°C for 6 hours to obtain a molded product containing modified pho...

Embodiment 3

[0023] Get 150g ZSM-5 / ZSM-11 co-crystal molecular sieves containing 70% ZSM-5, adopt 0.2M dilute hydrochloric acid solution to carry out acid treatment twice to it, solid-liquid ratio 1 / 7 (g / ml), acid treatment temperature at 80°C for 2 hours, wash the acid-treated solid product until the washing liquid is neutral, and dry at 110°C for 12 hours to obtain solid powder a3; take 100g of solid powder a3 and 29.4g of alumina, the dry basis mass percentage of the two It is 80%:20%, after adding 3.2g squash powder (accounting for 3% of dry basis total mass) and mixing, then adding 85g mass concentration is 8% dilute nitric acid solution (with dry basis total mass ratio is 0.8:1) to carry out Kneading and extruding into strips, drying at 110°C for 8 hours, and roasting at 540°C for 5 hours to obtain the molded product b3; impregnating b3 with ammonium hydrogen phosphate solution, drying at 110°C for 6 hours, and roasting at 520°C for 4 hours to obtain the modified phosphorus oxide C3 ...

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

An alkylation catalyst for generating p-methylethylbenzene and a preparation method thereof. The composition of the catalyst by weight percentage is: ZSM-5 / ZSM-11 co-crystal molecular sieve 50%-80%, binder 14%-41%, IVA or VA group element oxide 2%-10%, ⅡA or ⅢA Group element oxides 2% to 14%. The catalyst is prepared by first acid-treating the ZSM-5 / ZSM-11 co-crystallized molecular sieve, then kneading the acid-treated product with a binder, and extruding it into strands, and then sequentially using a solution containing a group IVA or group VA element compound, containing It can be realized by modifying the solution of group ⅡA or group ⅢA element compound. The catalyst of the invention is used for the alkylation of toluene and ethylene to generate p-methylethylbenzene, has the characteristics of high activity and good selectivity under the non-hydrogenation condition, and has application value.

Description

technical field [0001] The invention belongs to the field of heterogeneous catalysis, and in particular relates to an alkylation catalyst for generating p-methylethylbenzene and a preparation method thereof. Background technique [0002] Para-methylethylbenzene (PET) is a key raw material for the production of para-methylstyrene (PMS), which in turn produces high-end resins, high-performance rubbers, new plastics and special coatings, and many other high-end specialty chemicals. Its downstream products are used in automobiles, energy It is widely used in many industries such as chemical industry and materials. Poly-p-methylstyrene (PPMS), the polymer of PMS, is a high-performance plastic variety developed abroad in recent years. This polymer has the same good molding processability as polystyrene (PS), in terms of specific gravity, heat resistance, Flame retardancy, transparency and shrinkage are superior to PS. At the same time, p-methylethylbenzene can be copolymerized w...

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): B01J29/80C07C2/66C07C15/02
Inventor 陈福存谢素娟徐龙伢张爽李洪星刘盛林朱向学李秀杰王玉忠
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com