Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Use of Pb-Al-based hydrotalcite-like compound as sweetening catalyst

A technology for hydrotalcite and desulfurization, which is applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, refining with metal salts, etc., can solve the problems of increasing the complexity of the production process, the difficulty of the catalyst, and the control of the operation. Difficulty increase, etc.

Active Publication Date: 2015-06-17
SICHUAN ZHENGJIE SCI & TECH CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above method to deodorize oil products requires the use of a large amount of lye, which not only causes corrosion of production equipment and secondary pollution, but also increases the complexity of the production process and increases the difficulty of operation control
In order to overcome the above problems, some people use the solid alkalinity to combine the polymerized titanocyanine cobalt or sulfonated titanocyanine cobalt on the solid alkali to make a solid catalytic oxidant, which eliminates various problems caused by the use of lye and greatly improves the production speed. and economic benefits, but this catalyst is difficult to regenerate after deactivation

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
  • Use of Pb-Al-based hydrotalcite-like compound as sweetening catalyst
  • Use of Pb-Al-based hydrotalcite-like compound as sweetening catalyst
  • Use of Pb-Al-based hydrotalcite-like compound as sweetening catalyst

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0222] The preparation method of Pb / Al class hydrotalcite catalytic oxidant of the present invention comprises the following steps:

[0223] According to the structure of hydrotalcite, according to n(Pb 2+ ):n(Al 3+ ) ratio of 3:1; Weigh 21.86g of Pb (NO 3 ) 2 ; Get 8.25g of Al (NO 3 ) 3 ﹒ 9H 2 O, make a 30mL solution with deionized water, the liquid is A liquid; then according to c (NaOH) / [c (Pb 2+ )+c(Al 3+ )]=2.25, c(Na 2 CO 3 ) / [c(Pb 2+ )+c(Al 3+ )]=0.67 ratio, respectively weighed NaOH7.92g, anhydrous Na 2 CO 3 6.25g, make 30mL solution with deionized water, this solution is B solution;

[0224] Add about 5-10mL of deionized water into a 250mL beaker, and heat the water bath to 65°C. Then use the double drop method to drop the two liquids A and B into the beaker at a rate of 10mL / min, keep the pH at about 12, raise the temperature to about 75°C, seal the mouth of the beaker with plastic wrap and adhesive tape, and keep Static crystallization at constant ...

Embodiment 1

[0293] Embodiment 1 Mineral oil pin deodorizes

[0294] The preparation method of Pb / Mg / Al hydrotalcite is as follows:

[0295] (I) According to the structure of hydrotalcite, according to n(Pb 2+ ):n(Mg 2+ ):n(Al 3+ ) ratio is 13:2:5; Weigh 18.95gPb(NO 3 ) 2 , Take 1.3g of Mg(NO 3 ) 2 , 8.25g of Al(NO 3 ) 3 ﹒ 9H 2 O, make a 30mL solution with deionized water, the liquid is A liquid; then according to c (NaOH) / [c (Pb 2+ )+c(Mg 2+ )+c(Al 3+ )]=2.25, c(Na 2 CO 3 ) / [c(Pb 2+ )+c(Mg 2+ )+c(Al 3+ )]=0.67 ratio, respectively weighed NaOH7.92g, anhydrous Na 2 CO 3 6.25g, make 30mL solution with deionized water, this solution is B solution;

[0296](II) Add about 5-10mL of deionized water into a 250mL beaker, and heat the water bath to 65°C. Then use the double drop method to drop the two liquids A and B into the beaker at a rate of 10mL / min, keep the pH at about 13, raise the temperature to about 75°C, seal the mouth of the beaker with plastic wrap and adhesive ...

Embodiment 2～23

[0299] Embodiment 2~23 mineral oil product deodorization

[0300] According to the deodorization method of embodiment 1, each parameter of embodiment 2~23 is as shown in table 5 below:

[0301] Each parameter table of table 5 embodiment 2~23

[0302]

[0303]

[0304] In Table 5, the unsweptened oil contains 0.15wt% mercaptan.

[0305] Refer to Example 1 for the preparation method of the hydrotalcite-like catalysts of the above-mentioned Examples 2-23.

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 provides a use and use method of a Pb-Al-based hydrotalcite-like compound as a sweetening catalyst and belongs to the field of chemical engineering. The invention provides the use and use method of the Pb-Al-based hydrotalcite-like compound as a sweetening catalyst. The Pb-Al-based hydrotalcite-like compound is used as a catalyst for mercaptan catalytic oxidation, utilizes a Pb / Al composite metal oxide as an active unit and has a mole ratio of Pb to Al of 5-20: 5, or the Pb-Al-based hydrotalcite-like compound can form a novel multielement hydrotalcite-like compound by use of other metals based on the Pb / Al. The invention also comprises a sweetening method. The Pb-Al-based hydrotalcite-like compound has outstanding sweetening effects and can be recycled so that a cost is reduced.

Description

technical field [0001] The invention relates to the application and application method of a Pb-Al-based hydrotalcite-like catalyst as a sweetening catalyst, and belongs to the field of chemical industry. Background technique [0002] Hydrotalcite is a naturally formed anionic clay mineral with a layered structure. The layered structure is similar to brucite. When part of the magnesium ions of brucite are isomorphously replaced by aluminum ions, the sheets have residual positive charges. The balance of carbonate anions between the sheets forms hydrotalcite, and the chemical formula of natural hydrotalcite is Mg 6 al 2 (OH) 16 CO 3 4H 2 O. Hydrotalcite-like forms are formed when the magnesium or aluminum of the hydrotalcite is replaced by other divalent or trivalent metal ions, or the carbonate ions between the layers are replaced by other anions. [0003] Due to geological environment and biochemical effects, mercaptans are contained in most petroleum products, such as ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J23/89C10G29/06
Inventor 鲁学文
Owner SICHUAN ZHENGJIE SCI & TECH CO LTD
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
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