Study on the Possibility of Applying Organic Compounds as Pore-Forming Agents for the Synthesis of Foam Glass

Yatsenko, E. A.; Гольцман, Б. М.; Smolii, V. A.; Goltsman, Natalia S.; Yatsenko, L.A.

doi:10.1134/s1087659619020135

Cited by 22 publications

(11 citation statements)

References 13 publications

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“…Use of organic pore forming agent (glycerin) allows to reach uniform distribution of pore forming agent through the whole charge volume and, respectively, to obtain more homogenous porous structure. The foaming mechanism of foam glass passes according to the reactions (2) and (3) [18][19][20]:…”

Section: Resultsmentioning

confidence: 99%

The problems of protection and heat insulation of steel tanks which are used in hydrogen power engineering

Yatsenko¹,

Гольцман²,

Izvarin³

et al. 2023

cisisr

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The trends in the development of hydrogen power engineering as an alternative environmentally friendly source of energy are given. The problems of hydrogen storage in steel spherical tanks, mainly related to the thermal insulation of the tank, are considered. The structure of steel spherical tanks for storing liquid hydrogen at low temperatures, which, as a rule, is 21 K, the hydrogen condensation temperature, is considered. The characteristics of AISI 316L austenitic stainless steel, developed on the basis of the AISI 304 steel grade, improved by 2.5 % molybdenum addition, which increases its corrosion resistance and allows the use of AISI 316L steel in aggressive environments, and therefore found the widest application in the design of spherical hydrogen tanks, are presented. The chemical composition of AISI 316L austenitic stainless steel is displayed. A number of heat-insulating materials for hydrogen storage in steel spherical tanks are considered. The characteristics of the expanded pearlite currently used for this purpose, which has a number of disadvantages, such as caking of the material, high costs in its production, loss of thermal insulation properties after a certain cycle of thawing -freezing, are shown. The parameters of alternative heat-insulating materials, such as aerogels, polystyrene foam, foam glass, are examined. It has been established that aerogels, despite all their advantages, are not stable in an oxygen environment and are a very expensive as material; expanded polystyrene, being an organic substance, is a subject to flammability, and therefore is not suitable for use in hydrogen energy. Foam glass was identified as the most promising heat-insulating material, which has a number of advantages over other materials. Compositions of charge for obtaining foam glass have been developed, and a series of samples of foam material has been synthesized. The optimal composition of foam glass was chosen, which is most suitable for storing hydrogen in steel spherical tanks.

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Section: Resultsmentioning

confidence: 99%

The problems of protection and heat insulation of steel tanks which are used in hydrogen power engineering

Yatsenko¹,

Гольцман²,

Izvarin³

et al. 2023

cisisr

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“…Water, waterglass (Na 2 O•2SiO 2 •nH 2 O, sodium silicate solution 75Tw), and glycerol (C 3 H 5 (OH) 3 , 98% "AR Grade Fluid") were used as additives. Preparation of the raw mixture included preliminary grinding of glass to a particle size of less than 5 mm and sequential milling in a laboratory ball mill to a particle size of less than 250 µm (passage through standard sieve No 60); adding glycerol, waterglass, and water (according to developed compositions); and mixing for 10 min to evenly distribute the components [36,38,[47][48][49].…”

Section: Methodsmentioning

confidence: 99%

“…It is also possible to use various organic substances (sugar, starch, glycerol, etc.) [12,17,[35][36][37][38]. In addition, carbides and nitrides of elements of III and IV groups and even oxides of rare earth metals are used as such foaming agents (Ni 2 O 3 , CeO 2 ) [39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Role of Carbon Phase in the Formation of Foam Glass Porous Structure

Гольцман

Yatsenko

2022

Materials

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The production of durable, non-combustible, heat-insulating materials is currently very important. One of the most promising materials is foam glass. Modern enterprises widely use organic foaming agents in foam glass production. The purpose of this work is to study the role of the carbon phase formed during the organic foaming agent’s (glycerol) thermal destruction in the processes of glass mass foaming. The samples were synthesized using the powder method with high-temperature treatment. Different ratios of glycerol and waterglass in a foaming mixture showed that amount of glycerol should be less than in waterglass. Otherwise, the amount is excessive and the glycerol burns out. It was shown that the quantitative description of the carbon phase structure and properties is complicated by its nanometer size and fusion into the glass. Theoretical calculations demonstrate that carbon particle size cannot be greater than 535 nm. Using a set of methods, it was proved that the carbon phase is represented by nanometer particles of amorphous sp2-carbon. Therefore, the foaming mechanism includes nanoparticles settling and immersing into the glass surface, a reaction of carbon with the sulfate ions from glass with a release of gases. Conclusions on foaming intensification via using sulfur additions and other organic foaming agents were drawn.

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“…This paper was cited in publications on the preparation of glass-containing foams from geopolymers [122] and vitrified MSWI bottom ash [123] in which the formation of wollastonite and the freezing of the microstructural evolution were mentioned. Other papers cited this publication with respect to the recycling of glass waste into foam glass [124][125][126][127][128][129], porous waste glass for lead removal in wastewater treatment [130], lead stabilization through alkali activation and sintering of Pb-bearing sludge [131], utilization of waste glass for the production of sulphuric acid resistant concrete [132], mechanical and alkali activation of MSWI fly and bottom ashes for the production of low-range alkaline cement [133] and foam glass-ceramics [134], inorganic gel casting for manufacturing of boro-alumino-silicate glass foams [135], porous glass-ceramics derived from MgO-CuO-TiO 2 -P 2 O 5 glasses [136], alkali activation of coal and biomass fly ashes [137], nickel-based catalysts for steam reforming of naphthalene utilizing MSW gasification slag as support [138], production of porous glass ceramics from titanium mine tailings and waste glass [139], porous bioactive glass microspheres [140], Al-SiO 2 composites [141], glass-ceramic foams from alkali-activated vitrified MSWI bottom ash and waste glasses [142]. Another study used vitrified MSWI bottom ash as input material to obtain similar porous glass ceramics [143] and was cited by some of the publications that also cited the first study.…”

Section: Sintering Of Glass-ceramicsmentioning

confidence: 99%

The EU Training Network for Resource Recovery through Enhanced Landfill Mining—A Review

2021

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The “European Union Training Network for Resource Recovery Through Enhanced Landfill Mining (NEW-MINE)” was a European research project conducted between 2016 and 2020 to investigate the exploration of and resource recovery from landfills as well as the processing of the excavated waste and the valorization of the obtained waste fractions using thermochemical processes. This project yielded more than 40 publications ranging from geophysics via mechanical process engineering to ceramics, which have not yet been discussed coherently in a review publication. This article summarizes and links the NEW-MINE publications and discusses their practical applicability in waste management systems. Within the NEW-MINE project in a first step concentrates of specific materials (e.g., metals, combustibles, inert materials) were produced which might be used as secondary raw materials. In a second step, recycled products (e.g., inorganic polymers, functional glass-ceramics) were produced from these concentrates at the lab scale. However, even if secondary raw materials or recycled products could be produced at a large scale, it remains unclear if they can compete with primary raw materials or products from primary raw materials. Given the ambitions of transition towards a more circular economy, economic incentives are required to make secondary raw materials or recycled products from enhanced landfill mining (ELFM) competitive in the market.

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Study on the Possibility of Applying Organic Compounds as Pore-Forming Agents for the Synthesis of Foam Glass

Cited by 22 publications

References 13 publications

The problems of protection and heat insulation of steel tanks which are used in hydrogen power engineering

The problems of protection and heat insulation of steel tanks which are used in hydrogen power engineering

Role of Carbon Phase in the Formation of Foam Glass Porous Structure

The EU Training Network for Resource Recovery through Enhanced Landfill Mining—A Review

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