Cradle to Gate
Identity ID
79b93c08-3757-42d4-9512-5fff48b5bf48
Materials
Associated ID
f0cb6775-207a-403c-a898-7580abcbf348
Included activities starts
Included activities ends
Description
Acetaldehyde can be used to manufacture resins, produce polyvinyl acetate and acetic acid, and is also used as a food additive to extend the shelf life of food products. The dataset includes primary raw and auxiliary materials, energy inputs, and waste outputs from the production process; infrastructure such as production equipment and factory construction are excluded from the system boundary of the dataset. The life cycle inventory data is sourced from literature. The production process of 1,3-butadiene includes steps such as raw material preparation, dehydrogenation and dehydration reactions, catalyst selection, catalytic reactions, and product separation and purification, with acetaldehyde being a byproduct of this process.
Activity Description
The production activities of this product include procedures such as raw material preparation, dehydrogenation and dehydration reactions, catalyst selection, catalytic reactions, product separation, and purification, with acetaldehyde being a by-product of this process.
Process Description
Acetaldehyde, also known as ethanal, is an organic compound with the molecular formula CH3CHO. It is a colorless liquid with a pungent, fruity odor, having a boiling point of approximately 20.2°C and a density of 0.783 g/cm³. Acetaldehyde is highly soluble in water, ethanol, and diethyl ether, and exhibits strong volatility and reducing properties. It is used in the production of resins, polyvinyl acetate, and acetic acid, as well as a food additive to extend the shelf life of food products.
Time period
2020
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The one-step ethanol method for preparing 1,3-butadiene uses ethanol as a raw material, which reacts in a reactor under the action of a catalyst at a certain temperature to produce butadiene in a single step. The chemical reaction is as follows: 2 C2H6O -> C4H6 + 2H2O + H2. Based on the chemical reaction, the molar yield of 1,3-butadiene from 1 kg of ethanol is 0.587 kg. In practice, the yield of 1,3-butadiene is lower than the stoichiometric yield due to the formation of by-products such as diethyl ether, ethylene, n-butanol, butenes, and heavy products (C6+).