A self-assembled supramolecular metallacyclic rectangle was investigated with scanning tunneling microscopy on highly oriented pyrolytic graphite and Au(111) surfaces. The rectangles spontaneously adsorb on both surfaces and self-organize into well ordered adlayers. On highly oriented pyrolytic graphite, the long edge of the rectangle stands on the surface, forming a 2D molecular network. In co...

The catalyst stability, mainly affected by coke deposition, remains being a challenge for the development of sustainable process hydrogen production steam reforming (SR) bio-oil. In this work, influence oxygenates composition in bio-oil on deactivation NiAl2O4 spinel derived has been approached studying SR wide range model with different functionalities, including acetic acid, acetone, ethanol,...

Abstract Climate change issues are calling for advanced methods to produce materials and fuels in a carbon–neutral circular way. For instance, biomass pyrolysis has been intensely investigated during the last years. Here we review of algal lignocellulosic with focus on products mechanisms, oil upgrading, combining anaerobic digestion, economy, life cycle assessment. Products include oil, gas, b...

• The first comprehensive evaluation of TPO fuel tested in a modern engine. High-quality distilled and blended with diesel for Tier 4 off-road applications. Performance penalty is negligible 40% blends without engine re-calibration. ISO 8178 test cycle NO X results are neutral but CO PM emissions increase. Elevated unregulated stem from fuel’s acidity, sulphur PAH content. There abundant worldw...

Chemical vapor deposition and infiltration of pyrolytic carbon for the production of carbon fiber reinforced carbon is studied by modeling approaches and computational tools developed recently. Firstly, the development of a gas-phase reaction mechanism of chemical vapor deposition (CVD) of carbon from unsaturated light hydrocarbons (C2H4, C2H2, and C3H6) is presented. The mechanism consisting o...

Micro- and nanomechanical string resonators, which essentially are highly stressed bridges, are of particular interest for micro- and nanomechanical sensing because they exhibit resonant behavior with exceptionally high quality factors. Here, we fabricated and characterized nanomechanical pyrolytic carbon resonators (strings and cantilevers) obtained through pyrolysis of photoresist precursors....

The laccase activity induced by copper ions in Trametes versicolor by two inducers was studied and the aims were to show that it is possible to obtain a high laccase activity in almost 12 of the enzymes product using a basic culture medium but different copper concentration. Laccase was inducted by 2,5xylidine and copper sulfate. Semi-purification of the crude laccase was carried out through pr...