This paper deals with maximizing dimethyl ether (DME) production from methanol due to its industrial importance as a future diesel fuel. The high acidity and the micro-porous structure of the catalysts encouraged this reaction. Catalysts containg 6% CuO supported on H-ZSM-5 and H-MOR zeolites give high activities for DME production. The 6% CuO/HMOR is more selective for DME production, while th...

This study includs the synthesis of some new Amic acid and Imides,starting from esters [S1] Terephthalic which then converted toits hydrazide [S2] to amic derivatives [S3-S7] finally withimides [S8-S12]. Preparing ester by usual esterification ofterephthalic with absolute ethanol in acidic medium, hasconverted its reacting it hydrazine hydrate. Theamic have been synthesized reaction ofhydrazide...

The authors studied the direct conversion of syngas to light paraffins in a dual-bed fixed-bed reactor. A catalyst composed three catalysts, physically mixed methanol synthesis (CZA), and dehydration dimethyl ether (DME) (Al2O3(C)) were put upper bed for DME, while SAPO-34 (SP34-C) zeolite was lower DME conversion. effects mass ratio CZA Al2O3(C), H2/CO molar ratio, space velocity on catalytic ...

The title compound, C(39)H(37)NO(8), is a product of the Michael addition of the cyclic secondary amine subunit of aza-14-crown-4 ether to dimethyl acetyl-enedicarboxyl-ate. The piperidinone ring exhibits a distorted chair conformation and the dimethyl acetyl-enedicarboxyl-ate fragment has a cis configuration with a dihedral angle of 56.61 (5)° between the two carboxyl-ate groups. The crystal p...

The title compound, C(29)H(33)NO(8), is a product of the Michael addition of the cyclic secondary amine subunit of the aza-14-crown-4 ether to dimethyl acetyl-enedicarboxyl-ate. The piperidinone ring exhibits a distorted chair conformation, and the dimethyl ethylenedicarboxylate fragment has a cis configuration with a dihedral angle of 78.96 (5)° between the two carboxyl-ate groups. The crystal...

Biomass from Oil Palm Empty Fruit Bunch (OPEFB) has the potential to be used as feedstock for bio-Dimethyl Ether (bio-DME) production through gasification process. Bio-DME replace liquified petroleum gas (LPG) and biodiesel it similar characteristics both fuels. Therefore, this study was aimed evaluate previous research on OPEFB-based bio-DME its sustainability, identify existing gaps in formul...

Sector coupling remains a crucial measure to achieve climate change mitigation targets. Hydrogen and Power-to-X (PtX) products are recognized as major levers allow the boosting of renewable energy capacities consequent use green electrons in different sectors. In this work, challenges presented by PtX processes addressed process intensification (PI) strategies their potential overcome these rev...

In order to enable science- and knowledge-based adaptation of catalyst materials new demands, e.g., methanol synthesis from CO2, a modified method prepare Cu/Zn-based catalysts based on the strict consecutive execution co-precipitation aging is investigated. By successfully stabilizing initial co-precipitate, two mixing regimes are revealed: regarding slow mixing, particle size co-precipitate d...