Ultrasound-Assisted Regioselective Nitration of Phenols Using Dilute Nitric Acid in a Biphasic Medium

2007 ◽  
Vol 46 (25) ◽  
pp. 8590-8596 ◽  
Author(s):  
Nitin S. Nandurkar ◽  
Malhari D. Bhor ◽  
Shriniwas D. Samant ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Nitric Acid ◽  
Ultrasound Assisted ◽  
Biphasic Medium ◽  
Regioselective Nitration ◽  
Dilute Nitric Acid

scholarly journals Ultrasound promoted regioselective nitration of phenols using dilute nitric acid in the presence of phase transfer catalyst

2007 ◽  
Vol 14 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Nitin S. Nandurkar ◽  
Mayur J. Bhanushali ◽  
Sachin R. Jagtap ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Nitric Acid ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Regioselective Nitration ◽  
Dilute Nitric Acid

scholarly journals Microbial nitrification and acidification of lacustrine sediments deduced from the nature of a sedimentary kaolin deposit in central Japan

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tetsuichi Takagi ◽  
Ki-Cheol Shin ◽  
Mayumi Jige ◽  
Mihoko Hoshino ◽  
Katsuhiro Tsukimura
Keyword(s):  
Nitric Acid ◽  
Lacustrine Sediments ◽  
Kaolin Clay ◽  
Central Japan ◽  
Inland Lakes ◽  
Fe Oxidation ◽  
Stable Isotopic ◽  
Fe Hydroxide ◽  
Kaolin Deposit ◽  
Dilute Nitric Acid

AbstractKaolin deposits in the Seto-Tono district, central Japan, were formed by intense kaolinization of lacustrine arkose sediments deposited in small and shallow inland lakes in the late Miocene. Based on mineralogical and stable isotopic (Fe, C, N) studies of Motoyama kaolin deposit in the Seto area, we concluded that it was formed by microbial nitrification and acidification of lacustrine sediments underneath an inland lake. Small amounts of Fe–Ti oxides and Fe-hydroxide in the kaolin clay indicated that iron was oxidized and leached during the kaolinization. The field occurrences indicate that leached ferric iron precipitated on the bottom of the kaolin deposit as limonite crusts, and their significantly fractionated Fe isotope compositions suggest the involvement of microbial activity. The C/N ratios of most of the kaolin clay are distinctly higher than those of modern lacustrine sediment. Although, the possibility of a low-temperature hydrothermal origin of the kaolin deposit cannot be completely ruled out, it is more likely that acidification by dilute nitric acid formed from plant-derived ammonia could have caused the kaolinization, Fe oxidation and leaching. The nitrate-dependent microbial Fe oxidation is consistent with dilute nitric acid being the predominant oxidant.

Greening microwave-assisted acid digestion of animal feed samples

2019 ◽  
Vol 11 (46) ◽  
pp. 5857-5863 ◽  
Author(s):  
Marianela Savio ◽  
Lucimar L. Fialho ◽  
Joaquim A. Nóbrega
Keyword(s):  
Nitric Acid ◽  
Green Chemistry ◽  
Animal Feed ◽  
Acid Digestion ◽  
Microwave Assisted ◽  
Nitric Acid Digestion ◽  
Recycle And Reuse ◽  
Feed Samples ◽  
Dilute Nitric Acid

The combination of dilute nitric acid digestion followed by recovery of the acid digests, represents steps towards green chemistry approaches: “reduce the use, recycle and reuse”, strictly following the major green chemistry recommendations.

scholarly journals Ultrasonic extraction of several cations with dilute nitric acid solutions from soils.

1982 ◽  
Vol 31 (11) ◽  
pp. E409-E412 ◽  
Author(s):  
Yuzo TAMARI ◽  
Yukiharu INOUE ◽  
Haruo TSUJI ◽  
Yuzuru KUSAKA
Keyword(s):  
Nitric Acid ◽  
Ultrasonic Extraction ◽  
Acid Solutions ◽  
Nitric Acid Solutions ◽  
Dilute Nitric Acid

Action of dilute nitric acid on isolated lignin

1956 ◽  
Vol 5 (2) ◽  
pp. 239-241
Author(s):  
A. A. Chuksanova ◽  
L. L. Sergeeva ◽  
N. N. Shorygina
Keyword(s):  
Nitric Acid ◽  
Dilute Nitric Acid
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