Results 101 to 110 of about 110,104 (297)

Kaolin as Resources For Development SiO2 Catalyst Ni/SiO2: Characterization and Catalytic Hidrogenation Test Benzena To Become Sikloheksana

open access: yesMakara Seri Sains, 2008
Kaolin one of clay minerals has been employed as a SiO2 source and produced a mixture of two type SiO2, quartz and quartz alpha, with the amount of 60 % of kaolin used. The SiO2 produced had been diverted to silica gel and used as supporting agent for Ni/
Tresye Utari   +2 more
doaj  

Addressing the challenges of modeling the scattering from bottlebrush polymers in solution [PDF]

open access: yes, 2020
Small‐angle scattering measurements of complex macromolecules in solution are used to establish relationships between chemical structure and conformational properties.
Burns, Adam B.   +4 more
core  

Ortho-para spin conversion of Ps by paramagnetic O2 dissolved in organic compounds

open access: yesNukleonika, 2015
The o-Ps mean lifetime value in liquids decreases in the presence of the paramagnetic oxygen molecules via the ortho-para conversion process. This effect was observed for several organic samples composed of carbon and hydrogen atoms differing in the ...
Zgardzińska Bożena   +2 more
doaj   +1 more source

Properties of Poly (isoprene) - Model Building in the Melt and in Solution

open access: yes, 2002
Properties of 1,4-\textit{trans} poly (isoprene) at ambient conditions are determined by simulations on two length scales based on two different models: a full-atomistic and a mesoscopic one.
Faller, Roland, Reith, Dirk
core   +1 more source

Geminal Difunctionalization of Ketones via C─S Bond Insertion of Photogenerated Donor–Donor Diazo Compounds

open access: yesAngewandte Chemie International Edition, EarlyView.
Geminal difunctionalization of readily available building blocks provides rapid access to molecular complexity. This work introduces a strategy for installing two distinct functional groups on a carbonyl carbon by transforming it into a donor–donor diazo compound, enabling both batch and flow applications with broad solvent compatibility.
Vincent George   +13 more
wiley   +1 more source

Influence of Ni concentration on α-MnO2 catalyst support and its potential application for benzene hydrogenation to cyclohexane

open access: yesKuwait Journal of Science
Herein, we report the influence of Ni at different concentrations on manganese oxide catalyst support (Ni/α-MnO2) prepared by the combined wet-impregnation and chemical reduction methods.
doaj   +1 more source

Low Temperature Oxidation of Cyclohexane: Uncertainty of Important Thermo-Chemical Properties

open access: yesEurasian Chemico-Technological Journal, 2018
The study of the standard formation enthalpy, entropy, and heat capacity for key species relevant to the low-temperature combustion of cyclohexane has been performed by applying the group additivity method of Benson. The properties of 18 Benson groups (8
M. Abbasi, N. Slavinskay, U. Riedel
doaj   +1 more source

Universal Ratios of Characteristic Lengths in Semidilute Polymer Solutions

open access: yes, 2002
We use experimental and simulation data from the literature to infer five characteristic lengths, denoted $\xi_s$, $\xi_f$, $\xi_\Pi$, $\xi_\phi$, and $\xi_D$ of a semidilute polymer solution.
Huang, Jung-Ren, Witten, T. A.
core   +3 more sources

Compositional Characterization, Quality Parameters, and Physicochemical and Bioactive Properties of Pequi (Caryocar brasiliense) Oils From Xingu and Cerrado in Mato Grosso, Brazil

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
Cerrado oil is richer in MUFA and antioxidant compounds, while Xingu oil shows higher SFA and enhanced oxidative stability, reinforcing the potential of pequi oil as a sustainable bioactive ingredient. ABSTRACT Pequi (Caryocar brasiliense) is a native fruit widely distributed in Brazilian biomes, specially in Cerrado, known for its high oil yield and ...
Dhayna O. Sobral   +8 more
wiley   +1 more source

Design and Optimization of a Novel Kalina‐Organic Rankine Cycle System Based on LNG Cold Energy Utilization

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study proposes a novel integrated system (SDKC‐DORC) that combines a split‐flow dual‐pressure Kalina cycle with a secondary organic Rankine cycle for the synergistic utilization of solar energy and liquefied natural gas (LNG) cold energy.
Ke Xiao   +6 more
wiley   +1 more source

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