Results 31 to 40 of about 106,648 (294)
Characterization of various zinc oxide catalysts and their activity in the dehydration-dehydrogenation of isobutanol [PDF]
Journal of the Serbian Chemical Society, 2008 Mono and bifunctional zinc oxide catalysts were prepared to study their activity in the catalytic conversion of isobutanol. The prepared catalysts were characterized by X-ray diffraction analysis and nitrogen adsorption measurements.
Saad Lamia, Riad Mary
doaj +1 more source
Enhanced light olefins production via n-pentane cracking using modified MFI catalysts
Heliyon, 2022 n-pentane catalytic cracking was studied over a series of MFI zeolites with varying SiO2/Al2O3 ratios (30, 80, 280, 500, and 1500) using a fixed-bed reactor operated at temperature 550–650 °C.
Ziyauddin S. Qureshi +5 more
doaj +1 more source
Egyptian Journal of Petroleum, 2014 A series of dealuminated Y-zeolites impregnated by 0.5 wt% Pt catalysts promoted by different amounts of Ni, Pd or Cr (0.3 and 0.6 wt%) were prepared and characterized as hydrocracking catalysts. The physicochemical and structural characterization of the
S.A. Hanafi +4 more
doaj +1 more source
Applied SciencesIn recent decades, the attention of researchers has been directed towards the study of the dehydration of isopropanol (IPA) through different techniques.
Mihaela Neagu, Diana-Luciana Cursaru
doaj +1 more source
An empirical analysis of the petroleum refining industry's participation in the FASB's standard-setting process: Working paper series--99-04 [PDF]
, 1999 Despite the recognized importance of constituent input in the Financial Accounting Standards Board's (FASB's) standard-setting process, corporate participation has been limited.
Tandy, Paulette R., Wilburn, Nancy L.
core
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Journal of Engineering and Applied Science, 2023 This research paper examined the operational performance and greenhouse gas (GHG) emissions of an existing gas treatment plant. Extensive data collection and analysis were undertaken to assess energy consumption and emissions and identify major emitter ...
Mohamed Magdy El-Eishy +2 more
doaj +1 more source
Life cycle assessment of Libyan crude oil [PDF]
, 2014 Petroleum products such as petrol and diesel are fossil fuels and have a high environmental impact. There is a demand to minimize these impacts especially in the upstream and midstream oil operations, i.e. exploration, production and refining processes,
Higginson, M, Irhoma, A, Su, D
core
Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics
FEBS Open Bio, EarlyView.Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini +2 more
wiley +1 more source
BioengineeringKnowledge of the impact of chemicals on the environment is important for assessing the risks that chemicals can generate in ecosystems. With the help of pilot-scale micro-tests, it was possible to evaluate the biological sludge in terms of its chemical ...
Daniela Roxana Popovici +2 more
doaj +1 more source