fischer-tropsch synthesis is a promising route for production of light olefins via co hydrogenation over transition metals. co is one of the most active metals for fischer-tropsch synthesis. some different variables such as preparation parameters and operational factors can strongly affect the selectivity of fischer-tropsch synthesis toward the special products. in the case of preparation varia...

The biocementation-based soil improvement technique that has been recently developed is enzyme-induced calcite precipitation (EICP). Previous studies on the EICP used pure commercial urease enzyme as a reaction catalyst to precipitate from urea and calcium chloride. However, inefficient for application large scale due its high price. Therefore, reported soybean potential alternative enzymes. Th...

Nanopalladium catalysts can be synthesized by the precipitation of palladium (Pd) on the surface of bacteria leading to the production of biogenic Pd nanoparticles (bio-Pd). For example, Shewanella oneidensis can reduce Pd(II) and subsequently precipitate it as Pd(0) nanocrystals on their cell wall and in their periplasmic space when a hydrogen donor is provided (De Windt et al., 2005). No expe...

In recent decades, the substitution of non-renewable fossil resources by renewable biomass as a sustainable feedstock has been extensively investigated for the manufacture of high value-added products such as biofuels, commodity chemicals, and new bio-based materials such as bioplastics. Numerous solid catalyst systems for the effective conversion of biomass feedstocks into value-added chemical...

A single-site Fe catalyst was prepared from bio-based precursors: xylose and haemoglobin. Its catalytic activity, selectivity, recyclability for nitroarene transfer hydrogenation using isopropanol, benzimidazole preparation, is reported.

The catalytic co-pyrolysis of a seaweed biomass, Laminaria japonica, and a typical polymer material, polypropylene, was studied for the first time. A mesoporous material Al-SBA-15 was used as a catalyst. Pyrolysis experiments were conducted using a fixed-bed reactor and pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). BET surface area, N2 adsorption-desorption isotherms, and NH3 tempe...

This systematic experimental investigation reveals that high-frequency ultrasound irradiation (550 kHz) induced oxidation of D-glucose to glucuronic acid in excellent yield without assistance of any (bio)catalyst. Oxidation is induced thanks to the in situ production of radical species in water. Experiments show that the dissolved gases play an important role in governing the nature of generate...

Highly efficient and eco-friendly antimicrobial agents are crucial to the development of future marine antifouling coatings. A high low bio-toxicity bio-based anti-biofoulant, 2,5-diformylfuran dioxime chelating with copper ions (E-DFFD-Cu), is evaluated. Its minimal bactericidal concentration for 50% maximal effect (EC50) 4.95 7.03 µmol L−1, respectively. Excellent anti-biofouling performance ...

This study developed an upgrading process focusing on acid transformations of water phase pyrolysis bio-oils to esters of oxygen-containing fuels via ZSM−5 catalyst. Temperature was set as a factor with five levels ranging from 60 to 135 °C with reaction time from 1 to 8 h. The results showed that 89% of high acid conversion and over 90% of ester selectivity was obtained from the feedstock via ...