Methods for the study of hydrothermal crystallization

Rabenau, A.

doi:10.1016/0079-1946(81)90018-5

Cited by 17 publications

(5 citation statements)

References 28 publications

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“…At higher temperatures, the equilibrium shifts further toward metal oxide formation (Equation 11.2) [14].…”

Section: Principle Of Hydrothermal Processingmentioning

confidence: 97%

“…Metal hydroxides are formed when an aqueous metal salt solution is heated up due to the shift of the reaction equilibrium (Equation 11.1).…”

Section: Principle Of Hydrothermal Processingmentioning

confidence: 99%

“…A wide variety of known minerals, including oxides, silicates, phosphates, and sulfides were grown under hydrothermal conditions [3]. It was also demonstrated that geothermal brines, that is, aqueous mixtures containing cosolvents (mineralizers) such as halides, carbonates, or hydroxides, can solubilize solids like PbS and HgS and enable transport and hydrothermal reactions of the compounds [9][10][11][12]. Furthermore, it was realized that naturally occurring zeolites are formed by natural hydrothermal processes [13].…”

mentioning

confidence: 99%

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Hydrothermal and Supercritical Water Processing of Inorganic Substances

Brunner¹

2014

Hydrothermal and Supercritical Water Processes

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“…At higher temperatures, the equilibrium shifts further toward metal oxide formation (Equation 11.2) [14].…”

Section: Principle Of Hydrothermal Processingmentioning

confidence: 97%

“…Metal hydroxides are formed when an aqueous metal salt solution is heated up due to the shift of the reaction equilibrium (Equation 11.1).…”

Section: Principle Of Hydrothermal Processingmentioning

confidence: 99%

mentioning

confidence: 99%

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Hydrothermal and Supercritical Water Processing of Inorganic Substances

Brunner¹

2014

Hydrothermal and Supercritical Water Processes

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“…During the second part of the 20th century, different research groups were involved in the development of hydrothermal processes either in materials chemistry (synthesis of new materials) or in materials science (crystal growtheven at the industrial scale, elaboration of small crystallites-from micro to nanoscale, the deposition of thin films), particularly by: Somiya and Roy [57], Roy and Tuttle [58], Roy and Osborn [50], Fyfe [59], Yamasaki et al [60,61], Koizumi and coworkers [62], Laudise and Nielsen [63], Somiya [64,65], Yoshimura et al [66,67], Demianets [68], Demianets and Lobachev [69], Eitel [70], Rabenau [71], Joubert and coworkers [72], Demazeau and coworkers [73,74], Whittingham and coworkers [75], Komarneni and coworkers [76,77], and Riman et al [78].…”

Section: A Brief History Of Hydrothermal Processesmentioning

confidence: 98%

Solvothermal and hydrothermal processes: the main physico-chemical factors involved and new trends

Demazeau¹

2011

Res Chem Intermed

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Hydro-and solvothermal processes play an important role in the different scientific domains involving either basic or applied research. During the last years, such processes have been strongly developed, in particular with the elaboration of nanocrystallites. This review article presents a brief history of their development, an analysis of the key factors governing such processes, and the recent trends.

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“…It was assumed that these crystals were formed during hydrothermal crystallization processes, as described by several authors for other species. 42,[49][50][51] During such processes, dissolved compounds (e.g., NiOH + in the present study) reacted with other solution components (e.g., Cl -) by forming low-soluble, thermodynamically stable crystals.…”

Section: Polished Surface Nonpolished Surfacementioning

confidence: 99%

Transpassive Dissolution of Alloy 625, Chromium, Nickel, and Molybdenum in High-Temperature Solutions Containing Hydrochloric Acid and Oxygen

Kritzer¹,

Boukis²,

Dinjus³

2000

CORROSION

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Coupons of nickel, molybdenum, chromium, and the nickelbased Alloy 625 (UNS 06625) were corroded in strongly oxidizing hydrochloric acid (HCl) solutions at 350°C and a pressure (p) of 24 MPa, with reaction times between 0.75 h and 50 h. For Alloy 625, the effect of surface roughness also was investigated. Nickel and molybdenum showed strong material loss after only 5 h of reaction as a result of the instability of the solid oxides formed under experimental conditions. The attack on chromium started at the grain boundaries. At longer reaction times, thick, spalling oxide layers formed on the surface. The attack on Alloy 625 also started at the grain boundaries and at inclusions leading to the formation of small pits. On polished surfaces, the growth of these pits occurred faster than on nonpolished surfaces, but fewer pits grew. Corrosion products formed at the surface consisted of oxygen and chromium. On isolated spots, nickel-and chlorine-containing products also were found.

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Methods for the study of hydrothermal crystallization

Cited by 17 publications

References 28 publications

Hydrothermal and Supercritical Water Processing of Inorganic Substances

Hydrothermal and Supercritical Water Processing of Inorganic Substances

Solvothermal and hydrothermal processes: the main physico-chemical factors involved and new trends

Transpassive Dissolution of Alloy 625, Chromium, Nickel, and Molybdenum in High-Temperature Solutions Containing Hydrochloric Acid and Oxygen

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