Rational engineering active sites and vantage defects of catalysts are promising but grand challenging task to enhance photoreduction CO2 high value-added C2 products. In this study, we designed an N,S-codoped Fe-based MIL-88B catalyst with well-defined bipyramidal hexagonal prism morphology via a facile effective process, which was synthesized by addition appropriate 1,2-benzisothiazolin-3-one...

in this study, multi wall carbon nanotubes (mwcnts) were synthesized by chemical vapor deposition (cvd) method using two different catalysts (fe nanoparticles) and (ni nanoparticles) with  two different substrates: quartz and alumina. acetylene gas was used as a carbon source and argon as a carrier gas at different temperatures and different times to study the effects of these parameters on cnt...

Bioleaching of spent catalyst using moderate thermophilic chemolithotrophic acidophiles in growth medium without Fe source was investigated with two different pulp densities and three different size fractions. All the experiments were conducted on shake flasks at a temperature of 65 °C. The leaching yield of Ni and Al was found to be promising with very high leaching yield of 92-96% followed by...

copolymerization of ethylene and propylene was investigated using a 4th generation phthalate ziegler-natta catalyst in normal hexane in a buchi reactor. the effects of different mole fractions of [al]/[ti], [si]/[al] and various amounts of hydrogen on productivity and weight percent of ethylene on the product, were studied. in the copolymerization reactions, tri-isobutyl aluminum (tibal) was us...

MP2/aug-cc-pVTZ calculations were performed on complexes of aluminium and boron trihydrides and trihalides with acetylene and ethylene. These complexes are linked through triel bonds where the triel center (B or Al) is characterized by the Lewis acid properties through its π-hole region while π-electrons of C2H2 or C2H4 molecule play the role of the Lewis base. Some of these interactions posses...

The separation of acetylene (C2H2) from carbon dioxide (CO2) and the purification ethylene (C2H4) C2H2 are quite essential processes for chemical industry. However, these challenging due to their similar physical properties, including molecule sizes boiling points. Herein, we report an N-rich cage-based microporous metal-organic framework (MOF), [Cd5(Tz)9](NO3) (termed as Cd-TZ, TZ stands tetra...

Zinc-aluminium layered double oxide (Zn-Al-LDO) catalysts derived from layered double hydroxides (LDHs) were prepared and used for the catalytic fast pyrolysis of cellulose to selectively produce 1-hydroxy-3,6dioxabicyclo[3.2.1]octan-2-one (LAC), which is a valuable anhydrosugar derivative. Analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were performed to invest...

In this paper, a highly efficient method was developed for the growth of CNOs in open air by effectively coupling the laser energy into the combustion flames through the resonant excitation of C2H4 molecules. CNOs with concentric graphitic shells were obtained at the wavelength of 10.532 μm compared with those grown without laser. The CNO growth rate at the wavelength of 10.532 μm is 2.1 g/h. L...

As one of the most promising CO2 utilization techniques, electrochemical reduction has recently received considerable attention. Cu is a unique electrocatalyst that can convert to value-added multi-carbon chemicals. Nevertheless, catalysts are always limited by poor selectivity and stability. Here, we report using copper-tetracyanoquinodimethane (CuTCNQ) derived nanoparticles as efficient elect...

In this study, characterization of vanadia supported on Al-modified titania nanotubes (TiNTs) synthesized by the alkaline hydrothermal treatment of TiO2 powders has been reported. A promising catalyst for oxidative dehydrogenation (ODH) of propane was prepared via the incipient wetness impregnation method. The morphology and crystalline structure of TiNTs were characterized by transmission elec...