Cradle to Consumer
Identity ID
a98a5344-3f07-4e2c-8337-b516de43b6e0
Materials
Associated ID
0147c3bc-8610-440b-9bfe-792a9dae9179
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumption end, and the transport service is calculated based on the transport situation of the product in the region. Sodium borohydride is widely used in organic synthesis, precious metal recovery, papermaking, electroplating and fuel cells and other fields; sodium borohydride is modeled as a pure substance, and when modeling this substance the user needs to add a solvent of their choice in the model; this dataset includes the main raw and auxiliary materials, energy, waste and air emissions of the production process, while infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activity of this product includes raw material reaction, product formation, separation and purification, drying and screening and other process steps. Sodium methoxide is a by-product of this production process.
Activity Description
The production activities of this product include raw material reaction, product generation, separation and purification, drying and screening.
Process Description
Sodium borohydride has the chemical formula NaBH4 and CAS number 16940-66-2. It is generally a white to off-white, odorless crystalline powder that readily absorbs moisture. It is readily soluble in water and liquid ammonia, slightly soluble in methanol and ethanol, and insoluble in organic solvents such as diethyl ether and benzene. Its aqueous solution is strongly alkaline. It is a powerful reducing agent and is relatively stable under alkaline conditions. It reacts violently with acids to generate hydrogen, reacts slowly with water to release hydrogen, and may ignite on contact with oxidizing agents. It is mainly used as a reducing agent in organic synthesis to prepare pharmaceutical, fragrance, dye, and other intermediates, and in precious-metal recovery to reduce gold, silver, platinum, and other metal ions from solution. It is also used as a bleach stabilizer in papermaking, as a reducing agent in electroplating solutions to improve coating uniformity, and as a hydrogen source for fuel cells.
Time period
2021
2026
Geography
China,Heilongjiang
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The trimethyl borate method is an advanced mainstream technology for the production of sodium borohydride. Compared with traditional processes, it has the advantages of high product purity and easy recovery of by-products. It accounts for more than 70% of the domestic sodium borohydride market. This data set represents the mainstream technology: using the mainstream trimethyl borate method, that is, the modified Schlesinger method, which is mainly divided into three core steps: first, an esterification reaction occurs with boric acid and methanol as raw materials to generate trimethyl borate; second, the purified trimethyl borate reacts with sodium hydride to generate sodium borohydride; and finally, the sodium borohydride is separated, purified and dried using an organic solvent. The main chemical reaction equations involved: H3BO3 + 3CH3OH → (CH3O)3B + 3H2O; (CH3O)3B + 4NaH → NaBH4 + 3CH3ONa