Results 141 to 150 of about 81,314 (317)
Chemistry – A European Journal, EarlyView.Enantioenriched α‐substituted primary amines are efficiently prepared by rhodium‐catalyzed asymmetric transfer hydrogenation of ortho‐hydroxyaryl N─H imines under mild conditions using a low catalyst loading and ammonium formate as the hydrogen source in high yields (up to 99%) and enantioselectivities (up to 99% ee).
Chonghuo Liu +4 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.Robust, bio‐derived, and freestanding films based on cellulose nanocrystals (CNCs), covalently decorated with achiral fluorophores, transduce shape chirality and supramolecular helicity into near‐white circularly polarized luminescence (CPL). With composites covering the visible spectrum, near‐white, right‐handed CPL with high luminescence dissymmetry (
Asmita Shah +10 more
wiley +1 more source
Oxidative decarboxylation of glucuronosides and the synthesis of xylitol
, 2004 The purpose of this research was to develop a novel chemical synthesis of xylitol, which could potentially be implemented on an industrial scale. Principally, the oxidative decarboxylation of glucuronosides was pursued as a novel route to yield xylitol ...
Stapley, Jonathan A
core +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study examines the microwave‐assisted catalytic pyrolysis (MACP) of individual and blended textiles (cotton, polyester, nylon 6) using ZnO and a ZnO/natural zeolite catalyst. In a custom‐built microwave reactor operated at 500°C, 1 kW power, and a 15‐min residence time, textile wastes were pyrolyzed.
Peyman Alizadeh +3 more
wiley +1 more source
Hydrogen donor‐assisted visbreaking of Canadian oil sands bitumen
The Canadian Journal of Chemical Engineering, EarlyView.Abstract High‐viscosity Canadian oil sands bitumen requires processing for efficient transportation and refining. Partial upgrading technologies, primarily based on thermal processing, can effectively reduce, or even eliminate, the use of costly diluent, increase bitumen quality and market value, potentially decrease greenhouse gas (GHG) emissions, and
Yi Zhang, Mohamed Ali, Jinwen Chen
wiley +1 more source
Catalytic Hydrothermal Liquefaction of Polyethylene With Pt/C to Tune Product Selectivity
CleanMat, EarlyView.Pt/C‐catalyzed hydrothermal liquefaction of polyethylene in supercritical water enables time‐dependent control of product selectivity, producing paraffin‐rich oils at shorter reaction times and aromatic‐enriched products at longer times without external hydrogen. ABSTRACT Hydrothermal liquefaction (HTL) represents a promising thermochemical pathway for
Taofeng Lu, Wan‐Ting Chen
wiley +1 more source
ChemSusChem, Volume 18, Issue 6, March 15, 2025.Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley +1 more source
Drug Testing and Analysis, EarlyView.Hydrolysis of the glycidate pre‐precursors MMDMG and EMDMG was evaluated for MDP2P production. Acid hydrolysis of MMDMG (HCl, 100°C, 18 h) yielded the highest MDP2P recovery (79%), whereas base hydrolysis produced only slightly lower yields (73%), demonstrating both pathways are effective routes to this key MDMA precursor.
Alexandra L. Mercieca +4 more
wiley +1 more source