Kinetic Study of Dilute Nitric acid Treatment of Corn Stover at Relatively High Temperature

Abstract Titanium shows outstanding resistance to seawater and marine atmospheres. It is also resistant to attack by hot metallic chloride solutions, sodium and potassium hypochlorite, and chlorine dioxide. The metal is resistant to attack by hot nitric acid at concentrations up to 80% and is not attacked by sulfuric acid. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: TI-122. Producer or source: Timet.

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URANUS S1

Alloy Digest ◽

10.31399/asm.ad.ss0751 ◽

1999 ◽

Vol 48 (7) ◽

Keyword(s):

Corrosion Resistance ◽

Shear Strength ◽

High Temperature ◽

Nitric Acid ◽

Physical Properties ◽

Tensile Properties ◽

Intergranular Corrosion ◽

Heat Treating ◽

Temperature Performance ◽

High Silicon

Abstract URANUS S1 is the development of 15 years research into alloys containing high silicon contents (4% here) to resist the transpassive intergranular corrosion from such chemicals as concentrated nitric acid. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-751. Producer or source: Cruesot-Marrel.

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SANDVIK 2RE10

Alloy Digest ◽

10.31399/asm.ad.ss0272 ◽

1972 ◽

Vol 21 (5) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Nitric Acid ◽

High Resistance ◽

Heat Treating ◽

Low Carbon ◽

High Chromium ◽

Temperature Performance ◽

High Nickel

Abstract SANDVIK 2RE10 is a high-chromium, high-nickel, extra-low-carbon austenitic stainless steel with high resistance to oxidizing media such as concentrated nitric acid, high resistance to intergranular corrosion and good structural stability. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-272. Producer or source: Sandvik. See also Alloy Digest SS-491, November 1987.

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

Scientific Reports ◽

10.1038/s41598-021-81627-4 ◽

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.

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A Study of Surface Modification on Adsorption Behaviors of Nanoporous Carbon

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.119.211 ◽

2007 ◽

Vol 119 ◽

pp. 211-214 ◽

Cited By ~ 1

Author(s):

Byeoung Ku Kim ◽

Young Seak Lee ◽

Seung Kon Ryu ◽

Byung Joo Kim ◽

Soo Jin Park

Keyword(s):

Nitric Acid ◽

Functional Groups ◽

Carbon Fibers ◽

Acid Treatment ◽

Surface Acidity ◽

Activated Carbon Fibers ◽

Adsorption Behaviors ◽

Toxic Gases ◽

Adsorption Amount ◽

Polar Functional Groups

In this work, to introduce polar functional groups on carbon surfaces, activated carbon fibers (ACFs) were treated by nitric acid in order to enhance the adsorption capacity of propylamine which was one of toxic gases in cigarette smoke. It was found that the polar functional groups were predominantly increased up to 2.0 M of nitric acid, resulting in the increase of total surface acidity. It was found that the adsorption amount of propylamine of the modified ACFs was increased around 17% after a nitric acid treatment. From the XPS results, it was observed that propylamine was reacted with strong or weak polar (acidic) groups, such as COOH, -COO or OH existed on the ACF surfaces.

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