(143d) Tributyl Citrate Production Via Reactive Distillation
Tributyl citrate (TBC) and Acetyl Tributyl citrate are two well-known bioderived plasticizer which has been used as substitutes for various phthalic esters. TBC production is generally accomplished by direct esterification of citric acid and butanol in a semi-batch process.
(241g) Triethyl and Tributyl Citrate Production from
As an alternative process, this work proposed the direct use of the calcium salts as raw materials for the synthesis of citrate plasticizers. By avoiding most traditional purification steps involved in the citric acid production, the use of calcium citrate is envision as a feasible alternative for the production of citrates under reduced costs.
Synthesis and kinetics of tributyl citrate using aluminum
The control step of total reaction was the reaction between dibutyl citrate and n-butanol to produce tributyl citrate. KEYWORDS: aluminum dihydrogen tripolyphosphate, modied activated carbon, tributyl citrate, kinetics, catalyze INTRODUCTION As a kind of both environmentally-friendly and non-toxic plasticizer, tributyl citrate (TBC) has been
Tributyl citrate production via reactive distillation: Model
This work describes a model reconciliation of a reactive distillation (RD) process for the production of tributyl citrate based upon pilot scale experimental data. Steady state modeling of the process was constructed using previously validated thermodynamics and reaction kinetics that included catalytic and self-catalytic contributions.
Tributyl Citrate Production via Reactive Distillation
This work describes the conceptual design and a pilot scale validation of a reactive distillation column for tributyl citrate (TBC) production by esterification of citric acid (CA) with...
- What is tributyl citrate production process?
- However, the current tributyl citrate production process, which consists in the esterification of citric acid with butanol, requires large excess of alcohol and long batch times in order to overcome the equilibrium limitations and achieve the desirable yield.
- Can a dynamic model represent the tributyl citrate industrial production process?
- A dynamic model for the tributyl citrate industrial production process was developed, implemented and compared with respect to industrial data within gPROMS®. The results showed that the model was able to represent adequately the industrial operation.
- Can tributyl citrate replace phthalate plasticizers?
- Tributyl citrate has been identified as a functional alternative for phthalate plasticizers, however there are still challenges regarding the industrial production in a semi-batch process, mainly associated with large excess of reactants, high energy and processing costs.
- Is tributyl citrate a functional alternative to phthalate?
- Citrate esters, most specifically tributyl citrate with or without acetylation has been identified and validated as a functional alternative for phthalate compounds. It is preferred mainly in those applications where human contact is involved such as toys, medical devices, drink containers, food packages, etc ( Wypych 2004 ).
- What is the reaction scheme of citric acid esterification with butanol?
- In this reaction, mono and dibutyl citrates are the intermediate products, and water is the by-product obtained in each esterification step ( Figure 1 ). Figure 1. Reaction scheme of citric acid esterification with butanol. Industrially, the process is carried out in a jacketed batch reactor coupled to a distillation column.
- What is the demand for phthalate plasticizers?
- The market trends indicate that the demand of phthalate plasticizers would fall from 88 % (2005) to 60 % in the coming years (IHS 2015).For that reason, many companies worldwide have intensified efforts for developing free-phthalate plasticizers focusing on the bio-based ones.
