Hydrogenation catalyst for naphthenic hydrocarbon and preparation method and application thereof

A catalyst and cycloalkane technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low cracking rate, reduced platinum content of active components, etc., and achieve cyclohexane isomerization rate Low, activity improvement, and the effect of reducing production cost

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] CN101992120A discloses a cycloalkane hydrogenation conversion catalyst using Y-Beta composite molecular sieve as the catalytic material. The catalyst uses noble metal Pt as the active component, and is used for the hydrogenation

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
  • Hydrogenation catalyst for naphthenic hydrocarbon and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] (1) Synthesis of Y-Beta composite molecular sieve

[0031] In the first step, 12.5g of Y molecular sieve was added to 0.65g of sodium hydroxide, 10.8g of TEABr (tetraethyl amine bromide), and 4.0mL of concentrated ammonia (25% by weight) solution, stirred for 0.5 hours and mixed well.

[0032] In the second step, 10.0mL silica sol (SiO 2 30% by weight) and 41 mL of distilled water were added to the above solution and stirred for 1 hour.

[0033] In the third step, the white gel was put into a 150mL stainless steel reactor, crystallized at 140°C for 90 hours, and taken out, washed until the solution was neutral and dried. The prepared sample was calcined at 550°C for 4h to remove the template. Get Y-Beta composite zeolite molecular sieve.

[0034] (2) Treatment of Y-Beta composite molecular sieve

[0035] Take 200 grams of Y-Beta composite molecular sieve prepared in step (1), and exchange them with 400 grams of ammonium nitrate solution with a mass concentrati...

Example Embodiment

[0038] Example 2

[0039] The preparation method of catalyst C2 is the same as that of Example 1, except that the metal Zn and Pt are co-impregnated, and the content of Zn is different. The catalyst composition and evaluation results are shown in Table 1.

Example Embodiment

[0040] Example 3

[0041] Take 50 grams of the hydrogen-type Y-Beta composite molecular sieve prepared in Example 1, 69 grams of SB powder, and 2.50 grams of Sesbania powder, mix well, then add 60mL deionized water and 2.50mL concentrated nitric acid (66.5w%) on the roller compactor Fully kneading to make it into a paste-like plastic, extrude a cylindrical strip with a diameter of 1.5mm on an extruder, dry at 110°C for 8 hours, and then calcinate in an air atmosphere at 550°C for 4 hours to obtain a catalyst carrier D2; take an appropriate amount of carrier D2, Impregnated with a solution containing Zn and Pt, dried at 110°C for 6 hours, and calcined at 500°C in an air atmosphere for 4 hours to obtain catalyst C3. The catalyst composition and evaluation results are shown in Table 1.

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

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Pore volumeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a hydrogenation conversion catalyst for naphthenic hydrocarbon. The catalyst comprises a carrier and active metal Pt and Zn, wherein the carrier comprises hydrogen type Y-Beta composite molecular sieve and inorganic refractory oxide. The hydrogen type Y-Beta composite molecular sieve accounts for 10-90 wt% of the catalyst carrier (calculated by the weight of the catalyst carrier), and has specific surface area of 500-700 m<2>/g, and pore volume of 0.25-0.45 cm<3>/g. The active metal Pt accounts for 0.02-0.4 wt% of the catalyst (calculated by the weight of the catalyst); and the Zn accounts for 0.5-15% of the catalyst (calculated by the weight of the catalyst). The catalyst has low content of noble metal, and shows high conversion rate, high ring opening rate of naphthenic hydrocarbon, high isomerization rate and low cracking rate for hydrogenation conversion of naphthenic hydrocarbon.

Description

Technical field [0001] The invention relates to a cycloalkane hydrogenation catalyst and a preparation method and application thereof, in particular to a cycloalkane hydrogenation conversion catalyst prepared by using a composite molecular sieve, and a preparation method and application thereof. Background technique [0002] Cetane number is an important indicator of diesel fuel combustion performance. Among diesel fractions, paraffins have the highest cetane number, cycloalkanes are second, and aromatic hydrocarbons have the lowest cetane number. More and more stringent environmental regulations have put forward newer requirements for the clean diesel production process. The production of ultra-low sulfur, low aromatics, high cetane number and low density clean diesel has become the direction to improve oil quality. [0003] Hydrodearomatization is an important technology that is often used to increase the cetane number of diesel. It is the hydrogenation of aromatic hydrocarbons ...

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): B01J29/80C10G45/64C07C5/13
Inventor 贾立明徐会青刘全杰王伟
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap