Combination of Sulfuric Acid with Cellulose during the Hydrolysis with a Small Amount of Concentrated Sulfuric Acid
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چکیده
منابع مشابه
THE LEACHING OF NEZAMABAD SCHEELITE WITH SULFURIC ACID
A new process for recovering scheelite ores comprises producing a concentrate from the ore, then leaching the concentrate with H_2SO_4 in the presence of H_3PO_4 and Na Cl at atmosphericpressure are discussed. Finely purification of the product will be described. The amounts of dissolution of tungsten in acid depend on the parameters such as time, temperature, type and concentration of acid an...
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The effects of temperature (25-40°C), H,SO, concentration (31-70% (w/v)) and the acid/substrate relationship (1-5 cm3 of H,SO, per g-' of cellulose) on the solubilization rate of microcrystalline cellulose and on the glucose production rate have been analysed. The solubilization process was by determining reducing groups present in solution. For acid/substrate relationships of more than 1 cm3 g...
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0019-1035/$ see front matter Published by Elsevier doi:10.1016/j.icarus.2011.06.008 ⇑ Corresponding author. Fax: +1 301 286 0440. E-mail address: [email protected] (M.J. Loeffl We report laboratory studies on the 0.8 MeV proton irradiation of ices composed of sulfuric acid (H2SO4), sulfuric acid monohydrate (H2SO4 H2O), and sulfuric acid tetrahydrate (H2SO4 4H2O) between 10 and 180 K. Usin...
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The distribution of charged species produced by electrospray of an ammonium sulfate solution in both positive and negative polarities is examined using Fourier transform ion cyclotron resonance mass spectrometry (FTICRMS). Positively-charged ammonium bisulfate cluster composition differs significantly from negatively-charged cluster composition. For positively-charged clusters all sulfuric acid...
متن کاملThe effect of Sulfuric acid and Maleic acid on characteristics of nano-cellulose produced from waste office paper
Present paper examines the effect of acid type and hydrolysis conditions on morphology, size, yield and crystallinity of produced cellulose nanocrystal (CNC). Cellulose obtained from waste office paper was hydrolyzed under the same conditions by Maleic acid (MA) and Sulfuric Acid (SA) in separate treatments. Also this cellulose was hydrolyzed under different timing and temperature by MA and SA...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1965
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.38.863