1、Theoretical study on the synthesis of vinyl acetate from acetylene and
In this study, we used density functional theory (DFT) to calculate the feasibility of preparing vinyl acetate (VAc) on four CN non-metallic materials (C 2 N, C 3 N, C 4 N and C 5 N) under the reaction conditions of 1 atm, 393.15–493.15 K at B3LYP/6-31G (d, p) level.
2、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.
3、(PDF) Optimization of Vinyl Acetate Synthesis Process
Based on the results obtained, a kinetic model is created that satisfies the synthesis of vinyl acetate.
Modeling and approval of vinyl acetate synthesis process from acetylene
The purpose of this work is to model and optimize the process of synthesis of vinyl acetate from acetylene and solve the listed problems for industrial production.
Shanghai Pujing Chemical Technology Co., Ltd.
The main feedstock of the process includes acetylene and acetic acid. With a fixed bed catalyst supported by activated carbon, vinyl acetate can be synthesized at 170-220℃ under atmospheric pressure.
Theoretical study on the synthesis of vinyl acetate from
In this study, we used density functional theory (DFT) to calculate the feasibility of preparing vinyl acetate (VAc) on four CN non-metallic materials (C 2 N, C 3 N, C 4 N and C 5 N) under the reaction conditions of 1 atm, 393.15–493.15 K at B3LYP/6-31G (d, p) level.
Simulation and improvement of the separation process of s
In this study, in the classical design of the process, acetylene is separated first, and then acetaldehyde is removed with the formation of an azeotrope between ethylene acetate and water.
A density functional theory study on the effect of acetylene on vinyl
In this work, the DFT calculations were used to study reaction network of acetylene on Pd-Au catalyst and the adsorption of relevant species to explore the effect of acetylene on vinyl acetate synthesis from acetoxylation of ethylene over Pd-Au catalysts.
VINYLACETATE Production Out of ACETYLENE
State Pedagogical Institute, Uzbekistan ABSTRACT: In the study, a nanocatalyst with high efficiency, activity and selectivity has been created for the catalytic acetylated reaction of acet.
(PDF) Simulation and improvement of the separation process of
In this study, in the classical design of the process, acetylene is separated first, and then acetaldehyde is removed with the formation of an azeotrope between ethylene acetate and water.
In the vast realm of chemical engineering, the synthesis of new materials embodies exploration and innovation. Acetylene, a crucial chemical feedstock, undergoes specific chemical transformations to produce vinyl acetate (VAc). This process not only presents technical challenges but also represents a scientific breakthrough. This article explores the synthesis of VAc from acetylene, delving into the scientific principles and practical significance behind this transformation.
Acetylene, an alkyne with a carbon-carbon triple bond, exhibits high reactivity. Its production typically relies on arc discharge or high-temperature cracking of hydrocarbons in petroleum. these methods are costly and environmentally taxing. Consequently, developing more economical and eco-friendly synthetic routes has become a research focus.
Vinyl acetate (VAc) is a vital organic chemical used extensively in plastics, rubber, coatings, and other industries. It can be synthesized via the esterification of acetylene with alcohols. This reaction requires high-purity acetylene as raw material and precise control of reaction conditions, such as temperature, pressure, and catalyst selection.
Under laboratory conditions, scientists have achieved direct esterification between acetylene and methanol. They discovered that suitable catalysts significantly enhance reaction rates while minimizing side reactions. For instance, palladium/carbon catalysts enable efficient acetylene conversion at lower temperatures. Additionally, optimizing parameters like temperature and pressure improves product yield and quality.
scaling this research for industrial applications faces challenges. Catalyst selection and regeneration are critical; effective catalysts must balance high activity, selectivity, and stability for reusability. finer control over reaction conditions is needed to ensure efficiency and productivity.
To address these issues, researchers are exploring innovative synthesis methods. Biocatalysis, leveraging enzymes from microorganisms or plant cells, offers an environmentally friendly alternative. This approach reduces reliance on conventional catalysts and lowers production costs.
Nanotechnology also presents opportunities for VAc synthesis. Nanomaterials, with their unique physicochemical properties, can act as catalysts or supports, enhancing reactant dispersion and reaction efficiency while reducing catalyst usage.
synthesizing VAc from acetylene is a complex yet promising chemical process. Ongoing research and technological innovations have yielded significant advances. In the future, the development of efficient, sustainable methods will likely expand acetylene’s role in chemical engineering, furthering its contribution to human progress.
