Results 121 to 130 of about 1,203,342 (289)

Recovery of volatile essential oils from citron (citrus junos) peel with supercritical carbon dioxide

open access: yes, 2022
S.879-884The volatile essential oils of freeze-dried citron peel were extracted using supercritical carbon dioxide, with and without ethanol entrainer, in a semi-flow type system and analyzed by gas chromatography.
Wilkinson, G.T.   +3 more
core   +1 more source

Recent Advances of Perovskite Oxides for Air Pollution Control Chemistry: The Closed Loop From Design to Application

open access: yesEcoEnergy, EarlyView.
This review summarizes a descriptor‐guided framework for linking theoretical calculations, in situ/operando characterization, synthesis regulation, and application screening in functional materials. Emphasis is placed on dynamic structure–property relationships that enable low‐cost material design with enhanced activity, stability, and environmental ...
Yanyu Jin   +9 more
wiley   +1 more source

Hydrous Carbonatitic Liquids Drive CO2 Recycling From Subducted Marls and Limestones

open access: yesGeophysical Monograph Series, Page 209-221., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Erwin Schettino, Stefano Poli
wiley  

+4 more sources

Study on Oily Cutting De-Oiling by Supercritical CO2 Extraction in Offshore Field

open access: yesShiyou jixie, 2019
To address offshore oily cuttings treatment, the supercritical CO2 extraction process is investigated. By analyzing the effects of different extraction conditions of supercritical CO2 on the extraction of waste oily cuttings and the solubility of base ...
Zhang Jie   +5 more
doaj  

Lattice‐Strained Cu2O‐Ni/NiO Heterostructure Enables Selective Electrocatalytic C–C Coupling of Alcohols to Cinnamaldehyde in Aqueous Medium

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study achieved the selective oxidation C–C coupling of PhCH2OH with EtOH to form cinnamaldehyde (CAL) on a designed Cu2O‐Ni/NiO heterojunction catalyst. By employing a salt precipitation strategy to balance the pH and cation concentration, an 86% conversion rate of PhCH2OH and a 67% high selectivity for CAL were realized.
Tian Cheng   +10 more
wiley   +1 more source

Enhanced Urea Oxidation Reaction by Mn‐Doped Nickel Hydroxide From Wastewater

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Mn incorporation modifies the hydroxide structure and modulates the electronic properties of the Ni centers, promoting the formation of catalytically active NiOOH species. Mn dopants induce a favorable electronic effect but do not directly participate in the UOR mechanism, enhancing the overall urea oxidation rate and resulting in increased hydrogen ...
Filippo Bano   +8 more
wiley   +1 more source

Supercritical tar sand extraction

open access: yes, 1982
patentAn integrated process for the recovery of carbonaceous material from tar sands by supercritical extraction involving countercurrent flow of the tar sand and the solvent is ...
Poska, Forrest L.
core  

Supercritical CO2 extraction of omega-3 rich oil from Sacha inchi (Plukenetia volubilis L.) seeds

open access: yes, 2015
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Supercritical carbon dioxide (SC-CO2) was employed to extractomega-3 rich oil from Sacha inchi (Plukenetia volubilis L) seeds
Grimaldi, R   +3 more
core   +1 more source

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