Results 61 to 70 of about 5,497,447 (382)

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Improvement of a well bottomhole zone treatment applying a spent sulfuric acid solution

Известия Томского политехнического университета: Инжиниринг георесурсов
Relevance. Caused by the need to ensure highly efficient distribution of spent sulfuric acid solutions during acid treatment of a production well bottomhole zone.
Marat Ya. Khabibullin
doaj   +1 more source

RECYCLING OF PRINTED CIRCUIT BOARDS AIMING SILVER RECOVERY: A HYDROMETALLURGICAL ROUTE STUDY [PDF]

Tecnologia em Metalurgia, Materiais e Mineração, 2015
The aim of this paper is characterize printed circuit board of computers and propose a hydrometallurgical route for silver recovery present in its composition. Initially, the printed circuit board was comminuted in both knife and hammer mills.
Marcos Paulo Kohler Caldas, Viviane Tavares de Morae, Eduardo Junca , Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa   +4 more
doaj   +1 more source

Biomimetic Reduction of Sulfuric Acid [PDF]

Bulletin of the Chemical Society of Japan, 1981
Abstract Sulfuric acid and sodium sulfate were readily reduced to elemental sulfur and hydrogen sulfide upon treatment with a mixture of either one of polyphosphoric acid derivatives, PPE, PPA, and P4O10, which can form a mixed anhydride having –P–O–S– linkage, and iodide or thiol.
Shigeru Oae, Hideo Togo
openaire   +3 more sources

Direct methane conversion to methanol by ionic liquid-dissolved platinum catalysts [PDF]

, 2006
Ternary systems of inorganic Pt salts and oxides, ionic liquids and concentrated sulfuric acid are effective at catalyzing the direct, selective oxidation of methane to methanol and appear to be more water tolerant than the Catalytica ...
Cheng, Jihong, Haught, Mark, Li, Zaiwei, Tang, Yongchun   +3 more
core   +2 more sources

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity

Advanced Functional Materials, EarlyView.
Copper sulfide based electrocatalysts for CO2 conversion are selective for production of formate as major product. Transformations under electrochemical conditions result in significant sulfur loss, and this study examines the nature of how persistent, residual sulfur (observed as surface SO42– species and S dissolved in the electrolyte) can sustain ...
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta, Metodija Najdoski, Violeta Koleva, Theocharis Tzanoudakis, Frederik Firschke, Peter Bogdanoff, Matthew T. Mayer   +8 more
wiley   +1 more source

Preparation of 5-Bromo-2-naphthol: The Use of a Sulfonic Acid as a Protecting and Activating Group

Molbank, 2009
The preparation of 5-bromo-2-naphthol (4) in three steps from 5-amino-2-naphthol (1) is described. A sulfonic acid group is introduced at the 1-position as an activating and protecting group for the Sandmeyer reaction.
Christopher Abelt, Jillian Hamilton, Renata Everett   +2 more
doaj   +1 more source

Non-spectral interferences due to the presence of sulfuric acid in inductively coupled plasma mass spectrometry [PDF]

, 2015
Results of a systematic study concerning non-spectral interferences from sulfuric acid containing matrices on a large number of elements in inductively coupled plasma–mass spectrometry (ICP-MS) are presented in this work.
Allain, Björn, Broekaert, Canals, Chan, Entwisle, Evans, Fernández, Grindlay, Grindlay, Guillermo Grindlay, Houk, Hu, Juan Mora, Kovacevic, Kowalewska, Kralj, Larsen, Luis Gras, M. Carmen García-Poyo, Machat, Maestre, Malinovsky, Margaretha T.C. de Loos-Vollebregt, Mora, Nakane, Perring, Sakurai, Sant'Ana, Tan, Todolí, Vanhaecke, Vanhaecke, Vogl   +33 more
core   +2 more sources

Impact of Sulfuric Acid Treatment of Halloysite on Physico-Chemic Property Modification

Materials, 2016
Halloysite (HNT) is treated with sulfuric acid and the physico-chemical properties of its morphology, surface activity, physical and chemical properties have been investigated when HNT is exposed to sulfuric acid with treatment periods of 1 h (H1), 3 h ...
T. Gaaz, A. Sulong, A. Kadhum, M. Nassir, A. Al-amiery   +4 more
semanticscholar   +1 more source

Fibrous Pb(II)‐Based Coordination Polymer Operable as a Photocatalyst and Electrocatalyst for High‐Rate, Selective CO2‐to‐Formate Conversion

Advanced Functional Materials, EarlyView.
A coordination polymer [Pb(tadt)]n prepared by a microwave‐assisted solvothermal method selectively reduces CO2 into formate under visible light with a high apparent quantum yield of ≈25% at 400 nm. It can function as a pre‐catalyst, along with conductive Ketjen Black, to form an active PbCO3/Pb3(CO3)2(OH)2 mixture that exhibits a high Faradaic ...
Chomponoot Suppaso, Ryosuke Nakazato, Shoko Nakahata, Yoshinobu Kamakura, Fumitaka Ishiwari, Akinori Saeki, Daisuke Tanaka, Kazuhide Kamiya, Kazuhiko Maeda   +8 more
wiley   +1 more source