Greener synthesis of 1, 2 butylene carbonate from CO2 using graphene-inorganic nanocomposite catalysis

Conference item


Onyenkeadi, V, Kellici, S and Saha, B (2017). Greener synthesis of 1, 2 butylene carbonate from CO2 using graphene-inorganic nanocomposite catalysis. SEEP 2017 –10th International Conference on Sustainable Energy & Environmental Protection. Bled, Slovenia 27 - 30 Jun 2017 London South Bank University.
AuthorsOnyenkeadi, V, Kellici, S and Saha, B
Abstract

The global emission of carbon dioxide (CO2) into the atmosphere has reached an unsustainable level that has resulted in climate change and therefore there is the need to reduce the emission of CO2. However, the reduction of CO2 emission has become a global environmental challenge and the use of CO2 to produce value added chemicals could be one of the few ways of reducing CO2 emission. CO2 is recognised as an abundant, cheap, recyclable and non-toxic carbon source and thus its utilisation for the production of value-added chemicals is extremely beneficial for the chemical industry. 1,2-butylene carbonate is a valuable chemical of great commercial interest. It is an excellent reactive intermediate material used in industry for the production of plasticisers, surfactant, and polymers and can also be used as a solvent for degreasing, paint remover, wood binder resins, foundry sand binders, lubricants as well as lithium battery because of its high polarity property. Several reaction routes have been attempted for 1,2-butylene carbonate production, which was phosgene, oxidative carboxylation, direct synthesis using homogeneous catalyst and direct synthesis using a heterogeneous catalyst. The latter being the most attractive route due to the inexpensive raw material, ease of catalyst recovery and the avoidance of corrosive reagents, such as phosgene. Continuous hydrothermal flow synthesis (CHFS) has been employed as a rapid and cleaner route for the synthesis of highly efficient graphene-inorganic heterogeneous catalyst, represented as Ce–La–Zr–GO nanocomposite. The graphene-inorganic heterogeneous catalyst has been characterised using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS), while X-ray powder diffraction (XRD) and Brunauer–Emmett–Teller (BET) methods have been used for the surface area measurements. Ceria, lanthana, zirconia doped graphene nanocomposite catalyst studies have shown high catalytic activity as compared to other reported heterogeneous catalysts in the absence of any organic solvent with a higher selectivity of 76% and 64% yield of 1,2-butylene carbonate at the reaction conditions of 408 K, 75 bar in 20 h.

Year2017
PublisherLondon South Bank University
Accepted author manuscript
License
CC BY 4.0
Publication dates
Print27 Jun 2017
Publication process dates
Deposited08 Dec 2017
Accepted19 Apr 2017
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