Download or read book The Properties of Pure Hydrogen Peroxide written by G. L. Matheson and published by . This book was released on 1929 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Properties of Pure Hydrogen Peroxide written by Otto Maass and published by . This book was released on 1921 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Properties of Pure Hydrogen Peroxide written by George Laurence Matheson and published by . This book was released on 1929 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Properties of Pure Hydrogen Peroxide written by George Laurence Matheson and published by . This book was released on 1925 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "In the past hydrogen peroxide has attracted a great deal of attention both from a purely scientific viewpoint and from the commercial end. It is a compound which is very varied in its actions and yet until recently nothing was known about the 100% compound. The chief difficulty that stood in the path of past investigators was the preparation of it in its pure form. This obstacle has been overcome within the past few years due to work carried out at the McGill laboratories and research on the properties of hydrogen peroxide both in its pure state and in aqueous solution is being pursued at the present time. [...]" --
Download or read book The Preparation and Properties of Pure Hydrogen Peroxide written by Everett Percival Linton and published by . This book was released on 1930 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties of Pure Hydrogen Peroxide written by Otto Maass and published by . This book was released on 1925 with total page 2682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physical and Chemical Properties of Pure Hydrogen Peroxide written by Paul Hiebert and published by . This book was released on 1924 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The reactions of hydrogen peroxide with the halogens and halogen hydrides has long been known. No work has hitherto been done on the reaction between hydrogen peroxide and hydrochloric acid. This has probably been due to the fact that concentrated solutions of pure hydrogen peroxide have been very difficult to prepare and the opportunities for extensive experimentation have been accordingly limited. [...]" --
Download or read book The Preparation and Properties of Pure Hydrogen Peroxide Solutions written by Paul Antoine Giguère and published by . This book was released on 1937 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Preparation Properties of Pure Hydrogen Peroxide written by Arnold Craig Cuthbertson and published by . This book was released on 1927 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The subject matter of this thesis deals with the preparation of pure hydrogen peroxide and the subsequent use of this pure product for the re-determination of the density and melting point, as well as the determination of the partition coefficients of hydrogen peroxide between ether and water. In connection with the latter, theories of solution are discussed. The reason that the re-determinat ion of the density and melting point were attempted was because they serve as the criteria of purity and the original values did not appear to be sufficiently accurate for this purpose. [...]" --
Download or read book Properties of Pure Hydrogen peroxide written by Otto Maass and published by . This book was released on 1924 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation and Properties of Hydrogen Peroxide written by Arnold C. Cuthbertson and published by . This book was released on 1929 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "A casual glance through the literature makes at once evident the variety of uses aqueous Solutions of Hydrogen Peroxide are capable of. Its bleaching power energetic oxidizing properties and antiseptic action make it an important compound to applied Science. From the standpoint of pure science its interest lies both in the similarities and distinguishing characteristics of water. Owing to the attached to all the properties of water it is extremely important to study a compound whose properties more nearly approximate to water than any other substance we at present know. [...]" --
Download or read book Properties of Pure Hydrogen Peroxide written by Paul G. Hiebert and published by . This book was released on 1922 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Of the many interesting properties of hydrogen peroxide, that which led most directly to the undertaking of this investigation, was the discovery of the fact that when dry hydrogen chloride gas is passed into anhydrous hydrogen peroxide chlorine is liberated, even at low temperatures. [...] The first experiments revealed the remarkable fact that even low concentrations of hydrochloric acid would bring about the decomposition of fairly dilute solutions of hydrogen peroxide, without however liberating chlorine. [...]" --
Download or read book 1 The Effect of Pressure on Two phase Two component Systems 2 The Preparation and Properties of Pure Hydrogen Peroxide written by Otto Maass and published by . This book was released on 1919 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Preparation and Properties of Pure Anhydrous and of Pure Concentrated Solutions of Hydrogen Peroxide written by William Hooker Hatcher and published by . This book was released on 1921 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Experiments have been planned for determining its molecular weight in the gaseous state, but unfortunately time has not permitted the accomplishment of this. The molecular refractive power gives a value which is greater than that whioh would be assigned to formula. It has been suggested that hydrogen peroxide is a weak acid. ..."--
Download or read book Journal of the American Chemical Society written by American Chemical Society and published by . This book was released on 1922 with total page 1724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Preparation and Properties of Hydrogen Peroxide and Its Aqueous Solutions written by Otto W. Herzberg and published by . This book was released on 1918 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The following research was undertaken to determine the best method for the preparation of concentrated solutions of hydrogen peroxide. These solutions were to consist solely of hydrogen proxide and water, and the properties of thess pure soltions were to be examined. [...]" --
Download or read book Organic electronic materials for hydrogen peroxide production written by Maciej Gryszel and published by Linköping University Electronic Press. This book was released on 2020-02-25 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen peroxide (H2O2) is an important oxidant, used in various fields of industry, such as paper manufacturing, production of polymers, detergents, and cosmetics. Considering that the molecule degrades only to H2O and O2, it is regarded as a green chemical. Unfortunately, the incumbent method of H2O2 synthesis, based on anthraquinone oxidation, although efficient, is not environmentally friendly, as it requires fossil fuels and significant energy input. Therefore, there are efforts underway to reduce the ecological impact of hydrogen peroxide production. Some of the most promising approaches involve catalytic reduction of O2 to H2O2 in an aqueous environment. This can be coupled with water oxidation. As the required energy could be delivered in different ways, hydrogen peroxide synthesis can be achieved by electrocatalysis, photoelectrocatalysis, or photocatalysis. This thesis explores the possibility of using organic electronic materials as catalysts for H2O2 evolution in oxygenated water solutions. Organic electronics is a field of materials science focused on conducting and semiconducting organic molecules. These materials offer many possible advantages, related to low cost, flexibility, and good optoelectronic properties. Huge progress in the field over the last years led to their commercial applications in e.g. organic light emitting diodes and photovoltaics. Only very recently have organic electronics begun to be considered from the point of view of catalysis. In the first two papers, we investigate electrocatalytic activity of an organic pigment (PTCDI) and a conducting polymer (PEDOT) towards oxygen reduction to hydrogen peroxide. Both types of catalysts are chemically stable and able to operate in a wide pH range. In paper 3, we demonstrate that H2O2-evolving photocathodes can be based on an organic PN heterojunction, giving devices of a record-breaking performance. In the first part of paper 4, the same concept was tested for a naturally-occurring semiconductor, eumelanin, leading to a first report of photoelectrocatalytic properties of this material. In the second part of paper 4, as well as in papers 5 and 6, we explore, respectively, photochemical hydrogen peroxide synthesis with eumelanin, organic semiconductors, and organic dyes. We show that the photostability of catalysts is higher for materials with low-lying HOMO level and it can be increased by an addition of a reducing agent to the reaction system. Our findings prove that already existing organic electronic materials can be successfully applied in H2O2 evolution for environmentally friendly chemical synthesis, suggesting their use in harvesting of solar energy and in situ generation of hydrogen peroxide for biomedical applications. Väteperoxid (H2O2) är en viktig oxidant som används inom olika industrier, såsom papperstillverkning och produktion av polymerer, tvättmedel och kosmetika. Med tanke på att molekylen bryts ner till vatten (H2O) och syre (O2) betraktas den som en grön kemikalie. Tyvärr är den befintliga metoden för framställning av H2O2 baserad på oxidation av en antrakinon, en metod som är effektiv, men inte miljövänlig eftersom den kräver fossila bränslen och betydande energitillförsel. Det pågår därför ansträngningar för att minska den ekologiska effekten av väteperoxidproduktionen. Några av de mest lovande metoderna involverar katalytisk O2 till H2O2-reduktion i vattenlösning, kombinerat med vattenoxidation. Eftersom den nödvändiga energin kan levereras på olika sätt kan väteperoxidsyntesen uppnås genom elektrokatalys, fotoelektrokatalys eller fotokatalys. Denna avhandling undersöker möjligheten att använda organiska elektroniska material som katalysatorer för framställning av H2O2i syresatta vattenlösningar. Organisk elektronik är ett område inom materialvetenskap med fokus på ledande och halvledande organiska molekyler. Dessa material erbjuder många fördelar, såsom låg kostnad, flexibilitet och goda optoelektroniska egenskaper. Enorma framsteg på området har under de senaste åren lett till deras kommersiella tillämpningar i till exempel organiska ljusemitterande dioder och fotovoltaik. Nyligen har också organisk elektronik börjat övervägas ur katalysens synvinkel. I de två första artiklarna undersöker vi en elektrokatalytisk aktivitet av ett organiskt pigment (PTCDI) och en ledande polymer (PEDOT) i respekt till syrereduktion och väteperoxidproduktion. Båda typerna av katalysatorer är kemiskt stabila och kan arbeta inom ett brett pH-område. I artikel 3 visar vi att H2O2-producerande fotokatoder kan baseras på en organisk PN-gränsyta, vilket ger enheter med en rekordbrytande kapacitet. I den första delen av artikel 4 testades samma koncept för en naturligt förekommande halvledare, eumelanin, vilket ledde till en första rapport om fotoelektrokatalytiska egenskaper hos detta material. I den andra delen av artikel 4, samt i artikel 5 och 6, undersöker vi fotokemisk väteperoxidsyntes med eumelanin, organiska halvledare och organiska färgämnen. Vi visar att fotostabiliteten hos katalysatorer är högre för material med lågt liggande HOMO-nivå och att den kan ökas genom en tillsats av ett reduktionsmedel till reaktionssystemet. Våra fynd visar att redan befintliga organiska elektroniska material framgångsrikt kan tillämpas i H2O2-utvecklingen för miljövänlig kemisk syntes, vilket antyder att de kan användas för att ta tillvara på solenergi och för produktion av väteperoxid inom biomedicin.
