We studied the thermal decomposition of dimethyl carbonate (DMC, C3H6O3) in a flash vacuum pyrolysis reactor 1100–1700 K range. The reaction products and intermediates were probed by ultraviolet synchrotron radiation photoelectron photoion coincidence (PEPICO) spectrometer to record isomer-specific mass-selected threshold (ms-TPE) spectra. Reaction pathways explored using quantum chemical calcu...

The donor-free trimethylsilylmethyllithium [LiCH(2)SiMe(3)](6) hexameric aggregate is for the first time broken up by simple ether donors such as diethyl ether (Et(2)O) and tert-butylmethyl ether ((t)BuOMe) to give the unprecedented asymmetric tetramers while the chelating dimethoxyethane (DME) gives the expected dimer.

In this study, the effect of dimethyl ether enriched air (DMEA) on pollutants and performance characteristics a diesel engine was evaluated. The combustion parameters have been evaluated by simulation method. Simulation results show that in-cylinder pressure increases slightly while duration is shorter for DMEA-engine compared to original case. addition, comparative test carried out, in which D...

The EU's energy and climate change concerns have materialized in the last years launching 2020-2030 strategic initiatives. Plan Up project seeks to monitor this area. Each EU member must implement its own plan (NECP) structured on 5 main dimensions: security, decarbonization, efficiency, internal market, research-innovation-competitiveness. Romania is committed reducing CO2 emissions by over 43...

The maritime sector accounts for almost 3% of global greenhouse gas emissions and is under increasing pressure to decarbonise rapidly. Renewable fuels represent a promising pathway decarbonisation, but their high costs hinder adoption. Carbon Capture Storage (CCS) can further augment marine fuel decarbonisation adds the cost. This work presents harmonised cost comparison four renewable carbon (...

This work examined the cool flame ignition and stabilization on heated walls with different surface reactivities. A premixed mixture of dimethyl ether (DME) O2 was impinged a wall temperature linearly ramped to determine temperature. Numerical analyses identify hysteresis phenomenon in extinction processes, which appears be primarily governed by low-temperature reaction kinetics. The formation ...

The recent advances in the development of heterogeneous catalysts and processes for the direct hydrogenation of CO2 to formate/formic acid, methanol, and dimethyl ether are thoroughly reviewed, with special emphasis on thermodynamics and catalyst design considerations. After introducing the main motivation for the development of such processes, we first summarize the most important aspects of C...

In this study we analyse economic policy support for biofuels, with the aim to determine the amount of support necessary to make investments in a gasification based biorefinery producing DME (dimethyl ether) profitable for a pulp and paper mill. As a case the integrated Swedish pulp and paper mill of Billerud Karlsborg is studied, using mixed integer linear programming and different future ener...