In the present study, a heterogeneous and homogeneous gas flow dispersion model for simulation and optimization of a large-scale catalytic slurry reactor for the direct synthesis of dimethyl ether (DME) from synthesis gas (syngas) and CO2, using a churn-turbulent regime was developed. In the heterogeneous flow model, the gas phase was distributed into two bubble phases including small and large...

The transition towards a CO2 neutral industry is currently spurring many new developments regarding processes for the conversion of CO2, or CO2-rich streams, into platform molecules such as methanol and dimethyl ether (DME). New give rise to separation challenges, well novel opportunities joint optimization reaction separation. In this context, DME can be performed very efficiently using newly ...

?-Li3PS4 is a solid electrolyte with high Li+ conductivity, applicable to sulfide-based all-solid-state batteries. While ?-Li3PS4-synthesized by solid-state reaction forms only in narrow 300-450 °C temperature range upon heating, readily available liquid-phase synthesis through low-temperature thermal decomposition of complexes composed PS43- and various organic solvents. However, the conversio...

The patented technology is a novel, portable, non-invasive, and flexible technical solution for converting biogas into valuable chemical compounds, such as bio-methanol bio-dimethyl ether (bio-DME). It consists of compact modules, connected to each other through flange-valve-flange system, be installed downstream an existing traditional plant. two main sections the module are those reforming sy...

The study has focused on the development of bifunctional catalytic materials for direct DME synthesis from CO2/H2. industrial Cu/ZnO/Al2O3 is used as copper based catalyst first step methanol It will be combined with hollow nano-ZSM-5 zeolites mesoporous shell acid second dehydration to DME. tested in CO2/H2 under following conditions: T = 225 °C, p 30 bar, H2/CO2 3. Under our reaction conditio...

In this study, we investigated carbon feedstock decomposition conditions on the synthesis of single-walled carbon nanotubes (SWNTs) by chemical vapour deposition. We simulated gas-phase thermal decomposition of ethanol and dimethyl ether (DME) at typical SWNT growth conditions using the chemical kinetic model, and confirmed the reaction trends and primary products using Fourier transform infrar...

Thermochemical biorefinery based on dimethyl ether (DME) as an intermediate is studied. DME is converted into methyl acetate, which can either be hydrogenated to ethanol or sold as a co-product. Considering this option together with a variety of technologies for syngas upgrading, 12 different process concepts are analyzed. The considered products are ethanol, methyl acetate, H2, DME and electri...

The production of dimethyl ether (DME) as compared to methanol from synthesis gas allows for increased conversions in a single pass. A challenge this process is the combination and dehydration functionalities catalyst without mutual negative interference their performances. Here, we studied use hydrated niobium pentoxide (Nb2O5·nH2O) phosphate (NbOPO4) with copper-based direct DME, while gamma-...