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

Method for preparing biodiesel in novel alkaline ionic liquid

A basic ion and biodiesel technology, which is applied in the field of biodiesel preparation and biodiesel preparation in binuclear alkaline ionic liquids, can solve the problem of less catalysts, and achieve the effects of mild reaction conditions, stable performance and fast reaction speed

Inactive Publication Date: 2012-06-13
JIANGNAN UNIV
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Binuclear ionic liquid is a new type of stability better than mononuclear alkaline ionic liquid, and the alkalinity is much stronger than that of mononuclear alkaline ionic liquid, showing superior alkali catalytic performance. Binuclear alkaline ionic liquid has been used in Catalytic synthesis of inorganic metal oxide microspheres, but as a catalyst for transesterification reactions is still rare

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The experimental results of preparing biodiesel with different dinuclear imidazole dibasic catalysts under the condition that the molar ratio of alcohol to oil is 12:1, the amount of catalyst is 0.5% (based on the mass fraction of castor oil), the reaction temperature is 60°C, and the reaction time is 5h. MC 2 OH and MC 3 OH has the best catalytic effect, the selectivity of methyl ester is close to 99%, and the content of methyl ester in biodiesel is above 98%.

Embodiment 2

[0020] to MC 2 The performance of the OH catalyst is good. In the experiment, the other conditions are kept constant, and the influence of the reaction time is investigated. The content of methyl ester increases continuously with the prolongation of the reaction time. When the reaction reaches 5 hours, the content of methyl ester and methyl ester reaches 97.2%. , is close to chemical equilibrium, and the selectivity of methyl ester has been kept at the highest level, that is, above 98.9%.

Embodiment 3

[0022] When the reaction time is 4h, the molar ratio of alcohol to oil is 12:1, and the reaction temperature is 60°C, different amounts of MC are added 2 OH catalyst, investigate the influence of methyl ester content and selectivity. The content and selectivity of fatty acid methyl esters all increase sharply with the increase of the amount of catalyst. When the amount of catalyst increases to 0.5%, the conversion rate of glyceride and the yield of methyl ester are at the highest level.

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 a method for preparing biodiesel in a novel alkaline ionic liquid, comprising the following steps: preparing a binuclear alkaline ionic liquid, and adding an ionic liquid catalyst, castor oil and methanol in a 3-neck flask according a certain proportion to react, wherein normal pressure reflux is carried out in the reaction temperature range of 45-75 DEG C, the amount of the catalyst is 0.1-0.8 %, the molar ratio of the methanol to the castor oil is 4:1-12:1, and the reaction time is 2-6 h. The binuclear alkaline ionic liquid has strong alkalinity and good catalytic performance, contains the effects of catalysis and solvent as a whole in the reaction process, changes the disadvantages that traditional solid base catalysts can not be recycled, and has better catalytic performance than a mononuclear alkaline ionic liquid. According to the invention, the production cost of the ionic liquid is low, the yield is high, and the produced ionic liquid can be recycled, thus the industrial production cost of the biodiesel is reduced, and the production process is simple and clean. Experimental results indicate that the maximum yield of fatty acid methyl ester can be more than 98 %. According to the method, the prepared biodiesel satisfies the principles of energy conservation and environment protection and is a novel alternative energy source, and the production of the novel clean energy has important significance for solving energy crisis.

Description

technical field [0001] The invention relates to the technical fields of green energy and new energy production. The invention relates to a method for preparing biodiesel in a novel alkaline ionic liquid, in particular to a method for preparing biodiesel in a dual-nuclear alkaline ionic liquid. Background technique [0002] Due to the large and unrestrained use of fossil fuels, it has caused problems such as energy crisis and environmental degradation, which has caused human beings to face dual pressures on energy and the environment. Therefore, human beings urgently need to find a new green energy source as an alternative energy source, biodiesel It is a future energy source that is similar in nature to petrochemical diesel, but has the advantages of biodegradation, complete combustion, and less harmful emissions. At present, the biodiesel production technology widely used in the world is the transesterification process of liquid alkali or solid alkali at normal temperature...

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): C11C3/10C10L1/02
CPCY02E50/13Y02E50/10
Inventor 王海军马洁
Owner JIANGNAN UNIV