Novel Route to Propylene Carbonate: Selective Synthesis from Propylene Glycol and Carbon Dioxide

In the present paper the linear quasi static theory of viscoelasticity for Kelvin‐Voigt materials with double porosity is considered. The basic external boundary value problems (BVPs) of steady vibrations in this theory are formulated. The uniqueness and existence theorems for regular (classical) solutions of the BVPs are proved by using of the potential method (boundary integral equations method) and the theory of singular integral equations. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

“…Tomishige et al [23] reported a conversion of about 2 % for the formation of propylene carbonate, which corresponds to the equilibrium …”

Section: Carbonatesmentioning

confidence: 94%

Thermodynamic Constraints for the Utilization of CO₂

Müller

Mokrushina

Arlt

2014

Chemie Ingenieur Technik

View full text Add to dashboard Cite

show abstract

“…[216] These catalysts are also effective to the direct synthesis of cyclic carbonate from CO 2 and diols such as ethylene glycol and propylene glycol. [217,218] The synthesis of DMC from CH 3 OH and CO 2 was investigated on CeO 2 prepared with various kinds of precursors under various calcination temperatures. The formation rate of DMC was almost proportional to the BET surface area of the catalysts.…”

Section: Synthesis Of Carbonatesmentioning

confidence: 99%

Ceria‐Based Solid Catalysts for Organic Chemistry

Vivier¹,

Duprez²

2010

ChemSusChem

357

244

View full text Add to dashboard Cite

Ceria has been the subject of thorough investigations, mainly because of its use as an active component of catalytic converters for the treatment of exhaust gases. However, ceria‐based catalysts have also been developed for different applications in organic chemistry. The redox and acid–base properties of ceria, either alone or in the presence of transition metals, are important parameters that allow to activate complex organic molecules and to selectively orient their transformation. Pure ceria is used in several organic reactions, such as the dehydration of alcohols, the alkylation of aromatic compounds, ketone formation, and aldolization, and in redox reactions. Ceria‐supported metal catalysts allow the hydrogenation of many unsaturated compounds. They can also be used for coupling or ring‐opening reactions. Cerium atoms can be added as dopants to catalytic system or impregnated onto zeolites and mesoporous catalyst materials to improve their performances. This Review demonstrates that the exceptional surface (and sometimes bulk) properties of ceria make cerium‐based catalysts very effective for a broad range of organic reactions.

show abstract

“…The catalytic activity of ceria-zirconia [Ce∕(Ce + Zr) = 0.2] calcined at 1273 K was comparable to that of CeO 2 -HS calcined at 873 K. The reaction temperature dependence of DMC formation showed that the ceria-zirconia catalyst can be used in a wide range of temperature, from even 343 K to 443 K. The catalytic performance of ceria-zirconia solid solution with a homogeneous tetragonal phase was also reported by other researchers [41]. The ceria-zirconia catalyst can be applied to the synthesis of cyclic carbonates such as EC and propylene carbonate from 1,2-diols and CO 2 [40,42]. The selectivity was very high below 403 K. At higher temperatures, a small amount of ethers was sometimes detected.…”

Section: Ceria-zirconia Catalystsmentioning

confidence: 59%