Production of fuel ethanol from bamboo by concentrated sulfuric acid hydrolysis followed by continuous ethanol fermentation

2011 ◽  
Vol 102 (23) ◽  
pp. 10929-10935 ◽  
Author(s):  
Zhao-Yong Sun ◽  
Yue-Qin Tang ◽  
Tomohiro Iwanaga ◽  
Tomohiro Sho ◽  
Kenji Kida
Keyword(s):  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Ethanol Fermentation ◽  
Fuel Ethanol ◽  
Continuous Ethanol Fermentation ◽  
Concentrated Sulfuric Acid

Heteroanthracyclines. 2. 4-Demethoxythioxanthodaunomycinone (7,8,9,10-tetrahydrobenzo(b)-6,7,9,11-tetrahydroxy-9-acetylthioxanthen-12-one)

1984 ◽  
Vol 62 (8) ◽  
pp. 1600-1607 ◽  
Author(s):  
Chiu-Ming Wong ◽  
Ai-Qiao Mi ◽  
Jiali Ren ◽  
Wasimul Haque ◽  
Hing-Yat Lam ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Title Compound ◽  
Compound A ◽  
Concentrated Sulfuric Acid

The title compound, a new heteroanthracyclinone was synthesized in five steps starting with 5,8-dimethoxy-2-acetyltetralin (15). Reaction of 2,2′-dithiosalicylic acid (16) with the tetralin 15 in concentrated sulfuric acid gave the tetracyclic thioxanthones 17 and 18. Conversion of 18 to 24 by demethylation and realkylation followed by oxidation and acid hydrolysis gave the title compound 27.

Reduction in environmental impact of sulfuric acid hydrolysis of bamboo for production of fuel ethanol

2013 ◽  
Vol 128 ◽  
pp. 87-93 ◽  
Author(s):  
Zhao-Yong Sun ◽  
Yue-Qin Tang ◽  
Shigeru Morimura ◽  
Kenji Kida
Keyword(s):  
Sulfuric Acid ◽  
Environmental Impact ◽  
Acid Hydrolysis ◽  
Fuel Ethanol ◽  
Hydrolysis Of

scholarly journals Characteristics of xylose and glucuronic acid at concentrated sulfuric acid hydrolysis

2012 ◽  
Vol 44 (3) ◽  
pp. 9-14 ◽  
Author(s):  
Dae-Haeng Cho ◽  
Yong-Hwan Kim ◽  
Jong-Moon Park ◽  
Jae-Hoon Sim ◽  
Byung-Ro Kim ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Glucuronic Acid ◽  
Concentrated Sulfuric Acid

Gallium Arsenide Integrated Circuits Decapsulation Technique Using Mixed Acid Chemistry For Die-Level Failure Analysis

2018 ◽  
Author(s):  
Harold Jeffrey M. Consigo ◽  
Ricardo S. Calanog ◽  
Melissa O. Caseria
Keyword(s):  
Gallium Arsenide ◽  
Sulfuric Acid ◽  
Nitric Acid ◽  
Integrated Circuits ◽  
Failure Analysis ◽  
Mixed Acid ◽  
Optimum Parameters ◽  
Plastic Package ◽  
Fuming Nitric Acid ◽  
Concentrated Sulfuric Acid

Abstract Gallium Arsenide (GaAs) integrated circuits have become popular these days with superior speed/power products that permit the development of systems that otherwise would have made it impossible or impractical to construct using silicon semiconductors. However, failure analysis remains to be very challenging as GaAs material is easily dissolved when it is reacted with fuming nitric acid used during standard decapsulation process. By utilizing enhanced chemical decapsulation technique with mixture of fuming nitric acid and concentrated sulfuric acid at a low temperature backed with statistical analysis, successful plastic package decapsulation happens to be reproducible mainly for die level failure analysis purposes. The paper aims to develop a chemical decapsulation process with optimum parameters needed to successfully decapsulate plastic molded GaAs integrated circuits for die level failure analysis.

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