1、醋酸甲酯与合成气一步合成醋酸乙烯

By the study of intrinsic kinetic in the batch autoclave of one-step synthesis of vinyl acetate from methyl acetate and syngas, a kinetic model of power function type was presented, and...

2、A combination of DFT and kMC to solve two engineering problems in the

Based on the existing experimental research, we try to use the method based on the combination of density functional theory and kinetic Monte Carlo to obtain the reaction kinetic equation and explore the reasons for the significant increase of CO 2 at the last stage of the reaction.

3、Preparation method for vinyl acetate through carbonylation of methyl

The invention relates to a preparation method for vinyl acetate through carbonylation of methyl acetate, and is mainly to solve the problems of low yield and selectivity of vinyl acetate in preparation for vinyl acetate from methyl acetate successively through carbonylation and cracking routes.

4、Catalytic routes and mechanisms for vinyl acetate synthesis

Here, we review studies on catalyst structure and reaction mechanisms for vinyl acetate synthesis via heterogeneous non-oxidative acetylene acetoxylation and homogeneous and heterogeneous oxidative ethylene acetoxylation.

5、One

Vinyl acetate was synthesized from methyl acetate and syngas in the presence of main catalyst rhodium iodide, co-catalyst methyl iodide, promoter lithium iodide, lithium acetate and...

Methods for Synthesizing Vinyl Acetate

When vinyl acetate is prepared from methyl acetate through the route of carbonylation and cracking, vinyl acetate yield and selectivity are low. The invention mainly aims at solving the problems.

Generation mechanism of methyl acetate during gas

Based on the kinetic parameters obtained from DFT calculations, kMC simulations were conducted to stimulate the generation process of methyl acetate.

Production of Vinyl Acetate from Methanol and Synthesis Gas

This report describes a process to produce vinyl acetate with high selectivity from exclusively methanol, carbon monoxide, and hydrogen.

Progress in Vinyl Acetate Production Process

The technological progress in vinyl acetate production process is introduced, including the latest achievements in reaction kinetics study and reaction process, catalyst preparation process and reactor structure optimization.

Progress in Vinyl Acetate

In this paper, the production process of vinyl acetate is introduced comprehensively.

In the world of chemistry, every chemical reaction is a profound understanding and application of natural laws. The preparation of vinyl acetate from methyl acetate not only reflects the sophistication of organic synthesis but also demonstrates the wisdom and courage of chemical engineers.

Methyl acetate, a colorless, transparent liquid with an刺激性odor, is the starting point for preparing vinyl acetate. It is generated by reacting methanol with acetyl anhydride under acidic conditions. This reaction requires precise control of reaction conditions and a high degree of experimental skill and experience.

In the laboratory, the required raw materials need to be prepared first. Acetyl anhydride is a colorless, oily liquid with a strong刺激性odor and is highly volatile. It is produced by reacting acetic acid with concentrated sulfuric acid under heating and stirring conditions. Methanol, on the other hand, is a colorless,flammable liquid with an alcoholic aroma and is commonly used in the production of formaldehyde and other chemicals. When these two compounds are mixed together under specific reaction conditions, a violent reaction occurs, producing methyl acetate.

Next, the two compounds are mixed together and reacted at a certain temperature and pressure. In this process, temperature control is crucial. Too high or too low temperatures can lead to reaction failures, so an accurate thermometer is needed to monitor the reaction temperature. pressure control cannot be ignored; excessive pressure may cause the reaction to run out of control, even causing danger.

During the reaction, continuous monitoring of reactants is necessary. By observing phenomena such as the color,odor, and gas production of the solution, we can judge whether the reaction is progressing or has ended. If abnormal situations arise, such as excess reactants or prolonged reaction time, the reaction must be stopped immediately and appropriately handled.

After the reaction is complete, the next step is to separate and purify the obtained methyl acetate. This usually involves steps such as distillation and crystallization. During distillation, different components can be separated by controlling the cooling effect and temperature of the condenser. Crystallization is a common method; by reducing the temperature of the solution to saturation and then cooling to evaporate the solvent, pure methyl acetate can be obtained.

Besides the above basic steps, there are some special techniques and methods that can improve the efficiency and quality of preparing methyl acetate from vinyl acetate. For instance, using a catalyst can accelerate the reaction rate; adopting a continuous flow reactor can reduce operation time and increase production efficiency; through optimization of reaction conditions such as temperature, pressure, time, etc., a more efficient and environmentally friendly reaction process can be realized.

In the preparation of vinyl acetate, some safety issues also need attention. As methyl acetate has a certain toxicity andflammability, strict safety regulations must be followed when operating. For example, wearing appropriate protective equipment, maintaining good ventilation in the working area, avoiding skin and eye contact, etc. Additionally, waste must be properly handled to avoid environmental pollution.

The preparation of vinyl acetate from methyl acetate is a complex and delicate process that requires chemical engineers to have solid theoretical knowledge and rich practical experience. Through in-depth understanding of chemical reaction principles and strict control of experimental conditions, we can achieve the transformation from methyl acetate to vinyl acetate, providing more possibilities and innovations for chemical production.