Physicochemical principles underlying the preparation of high-purity substances for microelectronic and optical applications

Борисов, С. А.; Menshchikova, T. K.; Potolokov, V. N.; Федоров, В. А.; Бреховских, М. Н.

doi:10.1134/s002016851411003x

Cited by 2 publications

(2 citation statements)

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“…The ability to produce innovative technological instruments and devices, with radically new possibilities derived from these breakthrough advances, strongly depends on the quality of the starting chemicals and the related processing materials and reagents. Consequently, there is a vital need to obtain substances with the minimum possible content of impurities, even at trace levels (Borisov et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…However, after the introduction of more exigent purity levels during the 1990s, selection and filtration were no longer sufficient, and additional ultrapurification processes had to be developed. These very strict levels of purity can only be reached through exhaustive research for optimal implementation of the very different technologies available for application in the ultrapurification processes: distillation, adsorption, ion exchange, extraction, or crystallization can be mentioned, but membrane separation must be highlighted (Borisov et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Preliminary techno-economic analysis of non-commercial ceramic and organosilica membranes for hydrogen peroxide ultrapurification

Abejón

Puthai

et al. 2017

Chemical Engineering Research and Design

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HIGHLIGHTS-Organosilica and ceramic non-commercial membranes for hydrogen peroxide ultrapurification -Simulation demonstrated the technical viability of the process for both membranes -Ceramic membrane less appropriate for Na as limiting impurity due to low rejection -Economic viability for both membranes, but uncompetitive against polymeric membranes -Permeability and rejection improvements required to attain competitiveness Abstract. Polymeric membrane cascades have demonstrated their technical and economic viability for hydrogen peroxide ultrapurification. Nevertheless, these membranes suffer from fast degradation under such oxidative conditions. Alternative membranes with higher chemical resistance could improve the ultrapurification process. Therefore, this work presents the preliminary techno-economic analysis of two non-commercial membranes (a ceramic one and a hybrid organosilica one). This analysis is complemented with further research regarding the competitiveness of these alternative membranes compared to polymeric ones. The results confirm the technical viability for both membranes, but the ceramic membrane is not appropriate when Na is considered as the limiting impurity (because it has too low rejection coefficient). The economic viability of the proposed ultrapurification processes is also probed, but not under competitive conditions, as the polyamide membrane appears to be the optimal choice. Nonetheless, improvements in the permeability of the hybrid membrane (an increase in the membrane permeability by a factor of 10) or the rejection performance of the ceramic membrane (an increase in the reflection coefficient above 0.85) could transform these noncommercial membranes into the most profitable alternative.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%