A kind of method that catalyzes rosin to prepare rosin ester and p-cymene simultaneously

A technology for p-isopropyltoluene and catalysis of turpentine, applied in chemical instruments and methods, organic chemistry, hydrocarbons, etc., to achieve the effects of reducing energy consumption, reducing reaction temperature, and simplifying the reaction process

Active Publication Date: 2016-09-21
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In conclusion, there is currently no literature that can directly use rosin as a raw material at the same time to use the same catalyst for the esterification of resin acids and the ring-opening isomerization-dehydroaromatization of monoterpenes to simultaneously prepare rosin esters and p-cymene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Put the FCC waste catalyst in the muffle furnace, and use the high-temperature roasting air oxidation method to roast at 600°C for 2 hours, activate the FCC waste catalyst to remove the carbon deposits deposited on its surface and in the pores, and increase the specific surface area of ​​the carrier . Take a three-necked round-bottomed flask, install a stirrer in the middle of the bottle, and install a thermometer and a reflux condenser on both sides of the bottle respectively. Put 20 g of activated FCC waste catalyst and Zn(AC) with a concentration of 8mol / L 2 Put the solution into a three-neck round bottom flask, impregnate at room temperature for 12 hours according to the equal-volume impregnation method, and stir at a speed of 200r·min-1, take it out, wash it with deionized water and then filter it with filter paper, remove the filtrate, and take the washed catalyst in the Dry at 120° C. for 10 hours, then calcinate at 500° C. for 3 hours, and pass through a 100...

Embodiment 2

[0032] (1) Put the FCC waste catalyst in a muffle furnace and roast it at 550°C for 4 hours by high-temperature roasting air oxidation method to activate the FCC waste catalyst to remove the carbon deposits deposited on its surface and in the pores, and increase the specific surface area of ​​the carrier. Take a three-neck round-bottom flask, install a stirrer in the middle of the bottle, and install a thermometer and a reflux condenser on both sides of the bottle respectively. Put 20 g of activated FCC waste catalyst and Zn(AC) with a concentration of 3mol / L 2 The solution was put into a three-neck round bottom flask, and impregnated at room temperature for 24 hours according to the equal volume impregnation method, and the stirring speed was 100r min -1 , take it out, wash it with deionized water and then filter it with filter paper, remove the filtrate, take the washed catalyst and dry it at 70°C for 12h, then roast it at 400°C for 5h, pass it through a 100-mesh sieve to get...

Embodiment 3

[0035] (1) Put the FCC waste catalyst in the muffle furnace and use the high-temperature roasting air oxidation method to roast at 650°C for 2.5h, activate the FCC waste catalyst to remove the carbon deposited on its surface and in the pores, and increase the specific surface area of ​​the carrier . Take a three-neck round-bottom flask, install a stirrer in the middle bottle mouth, and install a thermometer and a reflux condenser in the bottle mouths on both sides respectively, and put 20 g of activated FCC spent catalyst and Zn(NO 3 ) 2 Put the solution into a three-necked round bottom flask, impregnate at room temperature for 10 hours according to the equal volume impregnation method, and stir at a speed of 300r min -1 , take it out, wash it with deionized water and then filter it with filter paper, remove the filtrate, take the washed catalyst and dry it at 100°C for 9h, then roast it at 450°C for 4.5h, pass it through a 100-mesh sieve to get the modified FCC waste catalys...

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Abstract

A method for simultaneously preparing abietate and cymene by catalyzing turpentine comprises the steps of (1) adding turpentine liquid into a reactor, adding a catalyst and alcohol for reaction at a temperature of 240-280 DEG C for 1-4 hours; (2) filtering, allowing the filtrate to stand for layering, performing reduced pressure distillation of the lower-layer liquid for 1-2 hours to obtain molten abietate and disproportionate turpentine; (3) performing reduced pressure rectification of the disproportionate turpentine, collecting fractions at 100-102 DEG C to obtain cymene. The method of the invention makes full use of the characteristics of large specific surface area and molecular sieve matrix of FCC waste catalysts to prepare a solid acid heterogeneous phase catalyst, simultaneously prepares the two fine chemicals of abietate and cymene by turpentine catalytic reaction, is simple in production process, solves the problems that homogeneous catalysts are difficult to separate from products and are difficult to regenerate for recycle in traditional abietate industrial preparation, decreases the content of trace metal zinc in abietate, and improves the product quality.

Description

technical field [0001] The invention relates to the technical field of deep processing of rosin, rosin and turpentine, and regeneration and utilization of catalytic cracking waste catalyst in petroleum refining, and relates to a method for simultaneously preparing rosin ester and p-cymene by catalyzing rosin. Background technique [0002] Rosin is the resin secreted from the endocytosis of the pine trunk after the trunk is injured. It is a renewable non-food biomass resource. It can be separated by distillation to obtain rosin and turpentine, which are important natural chemical raw materials. The main component of rosin is various resin acids (molecular general formula C 19 h 29 COOH), the main component of turpentine is monoterpene (molecular formula C 10 h 16 ). my country is a big country of rosin production, and the annual output of gum rosin is more than 40wt, ranking first in the world. With the gradual depletion of fossil resources, how to use the renewable non-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09F1/04C07C15/02C07C5/41
Inventor 王琳琳陈小鹏丁胜芳周丹梁杰珍陈庆妹黄莹莹韦小杰邓永福
Owner GUANGXI UNIV
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