The adsorption of octylamine on Au(111) under ultrahigh vacuum conditions is investigated. The molecules surprisingly undergo a thermally activated chemical reaction, resulting in formation of trioctylamine as confirmed both by X-ray photoelectron spectroscopy (XPS) and by comparison to the scanning tunneling microscopy (STM) signature of trioctylamine deposited directly onto the surface.
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http://dx.doi.org/10.1021/ja710227g | DOI Listing |
Water Res
January 2025
Department of Global Smart City, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea. Electronic address:
Food waste condensate (FWC) is a valuable source for recovering short-chain fatty acids (SCFAs) through methods such as supported liquid membrane contactors. Containing organic compounds like acetate, propionate, and butyrate, FWC offers a rich substrate for efficient SCFA extraction. Recovering SCFAs from FWC provides notable environmental advantages, including reducing waste and generating high-value products for industries such as bioenergy and chemical production.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
April 2023
Nuclear Chemistry Department, Hot Laboratories Centre, Egyptian Atomic Energy Authority, P.O. 13759, Cairo, Egypt.
Zirconium is commonly used as a cladding material for nuclear reactors. The purity of the zirconium material seeks to control reactor efficiency. A novel composite of reduced graphene oxide-grafted polyacrylic acid, malic acid, and trioctylamine (rGO-g-PAA-MA/TOA) was prepared using in situ radical polymerization with gamma radiation at a dose of 25 KGy from a Co cell to preconcentrate zirconium Zr(IV) from zircon raffinate.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
February 2023
Department of Chemical Engineering, Advanced Separation and Analytical Laboratory (ASAL), Visvesvaraya National Institute of Technology (VNIT), Nagpur, 440010, India.
Levulinic acid is a carboxylic acid present in industrial downstream. It is an important chemical and can be transformed into various important chemicals such as 1,4-pentanediol, aminolevulinic acid, succinic acid, gamma valarolactone, hydoxyvaleric acid, and diphenolic acid. It is considered one of the top ten most important building block chemicals and bio-derived acids.
View Article and Find Full Text PDFBioresour Technol
July 2020
Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai 600062, India.
In the present investigation, recovery of malic acid from the fermentation broth was performed by using in situ reactive extraction method employing different combination of amine and solvent systems. Totally six solvent mixtures were tested for toxicity on Aspergillus niger PJR1. Further, effect of solvent mixture concentration on separation of malic acid was investigated.
View Article and Find Full Text PDFAppl Biochem Biotechnol
January 2019
Department of Chemical Engineering and Research Center of Chemical Technology, Hankyong National University, 327, Chunang-ro, Anseong-si, Gyeonggi-do, 17579, South Korea.
Pre-pulping extraction is a means of deriving a hemicellulose-rich process stream from the front end of a kraft pulp mill. When the extraction is carried out using green liquor, pulp quality and quantity can be retained while still releasing hemicelluloses and acetic acid (HAc) for recovery as bioprocessing feedstock or chemical products. The HAc that is present in the wood extraction is inhibitory to microorganisms and can hinder fermentation.
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