Micropollutants pre-concentration using adsorption-desorption cycles: application to chlorinated paraffins and alkyl-phenol derivatives

2016 ◽  
Vol 92 (5) ◽  
pp. 1076-1084 ◽  
Author(s):  
Yolanda Patiño ◽  
Eva Díaz ◽  
Salvador Ordóñez
Keyword(s):  
Alkyl Phenol ◽  
Phenol Derivatives ◽  
Chlorinated Paraffins ◽  
Adsorption Desorption

Adsorption, désorption et atomisation de l’oxygène sur rhénium

1971 ◽  
Vol 68 ◽  
pp. 29-33 ◽  
Author(s):  
Bernard Weber ◽  
Albert Cassuto
Keyword(s):  
Adsorption Desorption

Adsorption-desorption processes on solid surfaces.

1983 ◽  
Vol 139 (4) ◽  
pp. 736
Author(s):  
V.N. Ageev ◽  
E.Ya. Zandberg ◽  
N.I. Ionov ◽  
A.Ya. Tontegode
Keyword(s):  
Solid Surfaces ◽  
Adsorption Desorption

Adsorption/desorption properties of activated carbon on toluene with operation condition and characteristics

2015 ◽  
Vol 14 (1) ◽  
pp. 66-72 ◽  
Author(s):  
Seo-Hyun Pak ◽  
◽  
Myung-Seop Shin ◽  
Hyun-Jung Kim ◽  
Yong-Woo Jeon
Keyword(s):  
Activated Carbon ◽  
Operation Condition ◽  
Adsorption Desorption

UNTERSUCHUNGEN ÜBER DIE EXTRAKTION DES ROTEN KOBER-FARBSTOFFS DURCH ORGANISCHE LÖSUNGSMITTEL ZUR ÖSTROGENBESTIMMUNG IM HARN

1960 ◽  
Vol XXXV (I) ◽  
pp. 34-48 ◽  
Author(s):  
Gerd Ittrich
Keyword(s):  
Menstrual Cycle ◽  
Organic Solvents ◽  
Urine Sample ◽  
Phenol Derivatives ◽  
Organische Lösungsmittel ◽  
Colour Complex

ABSTRACT A series of organic solvents and phenol derivatives have been examined for the extraction of the pink Kober-colour complex. Optimal results could be achieved for fluorimetry by a solution of 2 % (w/v) p-nitrophenol and 1 % (v/v) ethanol in acetylenetetrabromide, when the green mercury line (546 mμ was used as primary light. The sensitivity, stability and specificity have been improved, compared with the previously described reaction. By changing the sequence of purification steps and by reducing the volume of the urine sample (5 ml) the method for the determination of total oestrogens has been simplified. Approximately 10 determinations can be done within 3–4 hours by one person. Recovery experiments and comparative determinations with a previously described method have been carried out. The excretion of total oestrogens in a complete menstrual cycle is determined with the described method.

Dual Nickel/Palladium-Catalyzed Reductive Cross-Coupling Reactions Between Two Phenol Derivatives

2020 ◽  
Author(s):  
Baojian Xiong ◽  
Yue Li ◽  
Yin Wei ◽  
Søren Kramer ◽  
Zhong Lian
Keyword(s):  
Functional Group ◽  
Low Cost ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Phenol Derivatives ◽  
Cross Coupling Reactions ◽  
Palladium Catalyzed ◽  
One Step ◽  
Aryl Tosylates ◽  
Low Sensitivity

Cross-coupling between substrates that can be easily derived from phenols is highly attractive due to the abundance and low cost of phenols. Here, we report a dual nickel/palladium-catalyzed reductive cross-coupling between aryl tosylates and aryl triflates; both substrates can be accessed in just one step from readily available phenols. The reaction has a broad functional group tolerance and substrate scope (>60 examples). Furthermore, it displays low sensitivity to steric effects demonstrated by the synthesis of a 2,2’disubstituted biaryl and a fully substituted aryl product. The widespread presence of phenols in natural products and pharmaceuticals allow for straightforward late-stage functionalization, illustrated with examples such as Ezetimibe and tyrosine. NMR spectroscopy and DFT calculations indicate that the nickel catalyst is responsible for activating the aryl triflate, while the palladium catalyst preferentially reacts with the aryl tosylate.

Adsorption/Desorption Performance of CO2 on Pitch-based Spherical Activated Carbons

2011 ◽  
Vol 26 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Fei XIE ◽  
Yan Li WANG ◽  
Liang ZHAN ◽  
Ming GE ◽  
Xiao-Yi LIANG ◽  
...  
Keyword(s):  
Activated Carbons ◽  
Adsorption Desorption
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