A novel physical (non-reactive) separation of cellulose from an ionic liquid (IL)/cosolvent mixture by compressed carbon dioxide is presented. The precipitation is completely reversible and rapid within small changes of pressure i.e. liquid phase CO2 composition. High pressure phase equilibrium, high pressure NMR, and solid state NMR have been utilized to understand the separation phenomena.

We proposed a novel UV curable reactive mesogen monomer for VA-LCD with Polymer-Sustained (Stabilized) Vertical Alignment (PSVA) which shows a high display performance. The experimental results reveal that the PSVA by the novel-monomer realizes less image sticking and better response time. key words: polymer-sustained (polymer-stabilized), phase separation, reactive mesogen, VA-LCD, PSVA

In this paper, we overview recent advances towards the integration of process design, process control and process operability in separation and reaction/separation systems that were developed within our group at Imperial College. Based on novel mixed integer dynamic optimization algorithms, a simultaneous strategy is presented featuring high fidelity dynamic models, explicit consideration of st...

The reactive-extractive distillation (RED) has the advantages of combining beneficial features both reaction and separation processes. Relative to conventional reactive or extractive distillation-based processes, RED is also less energy intensive as it relies on heat produced for subsequent process. Therefore, application ternary azeotropic become subject popular interest, evident by increasing...

The development of a reactive distillation process for the production of n-butyl acetate by transesterification of methyl acetate with n-butanol is presented. Thermodynamic aspects of the quaternary system n-butyl acetate – n-butanol – methyl acetate – methanol are discussed and UNIQUAC interaction parameters derived using the Dortmund Data Bank (DDB) are given. The reaction kinetics of the het...

The downstream separation of 1,3-propanediol from dilute aqueous solution was studied. A process combining reversible reaction of 1, 3-propanediol with acetaldehyde to 2-methyl-1,3-dioxane and a simultaneous extraction of the product by organic solvent appears to be technically feasible and attractive. The dioxane yield was 91-92%, the overall conversion of 1,3-propanediol was ca. 98%, and reco...

A new feasibility analysis methodology generalized from distillation is applied to membrane process. The model is formulated to depict the reactive liquid phase composition on the retentate side of membrane reactors. The effects of both chemical reaction and membrane mass transfer kinetics on the feasible products are elucidated by means of retentate phase diagrams and bifurcation analysis. In ...

Promoters are adsorbed mobile species which do not directly participate in a catalytic surface reaction, but can influence its rate. Often, they are characterized by strong attractive interactions with one of the reactants. We show that these conditions lead to a Turing instability of the uniform state and to the formation of reaction-induced periodic concentration patterns. Experimentally such...

• The performance of a reactive distillation column with cyclic operation is analysed. This the first simulation for an equilibrium reaction. Conventional and are compared production MTBE. In this paper MTBE from isobutene methanol via studied mass energy balance stage model. study shows application model, where reaction assumed. A process design equivalent to conventional has been simulated. o...