Identification of amorphous and crystalline phases in alumina entity and their contribution to the properties of the palladium catalyst

Boretskaya, A. V.; Il’yasov, I. R.; Ламберов, А. А.; Попов, А. Г.

doi:10.1016/j.apsusc.2019.143635

Cited by 9 publications

(2 citation statements)

References 37 publications

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“…The measurements were carried out at a temperature of 25 °C. All NMR spectra were integrated after baseline correction, and an average of at least on-screen integration values were taken for each calculation. − …”

Section: Methodsmentioning

confidence: 99%

Deep Insights into Heavy Oil Upgrading Using Supercritical Water by a Comprehensive Analysis of GC, GC–MS, NMR, and SEM–EDX with the Aid of EPR as a Complementary Technical Analysis

et al. 2020

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Upgrading of heavy oil in supercritical water (SCW) was analyzed by a comprehensive analysis of GC, GC–MS, NMR, and SEM–EDX with the aid of electron paramagnetic resonance (EPR) as a complementary technical analysis. The significant changes in the physical properties and chemical compositions reveal the effectiveness of heavy oil upgrading by SCW. Especially, changes of intensities of conventional EPR signals from free radicals (FRs) and paramagnetic vanadyl complexes (VO2+) with SCW treatment were noticed, and they were explained, respectively, to understand sulfur removal mechanism (by FR intensity and environment destruction) and metal removal mechanism (by VO2+ complexes’ transformation). For the first time, it was shown that electronic relaxation times extracted from the pulsed EPR measurements can serve as sensitive parameters of SCW treatment. The results confirm that EPR can be used as a complementary tool for analyzing heavy oil upgrading in SCW, even for the online monitoring of oilfield upgrading.

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Section: Methodsmentioning

confidence: 99%

Deep Insights into Heavy Oil Upgrading Using Supercritical Water by a Comprehensive Analysis of GC, GC–MS, NMR, and SEM–EDX with the Aid of EPR as a Complementary Technical Analysis

et al. 2020

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“…In addition to the anodizing process, high-purity amorphous and γ-alumina phases can be acquired by the calcination process of boehmite [AlO(OH)] or bayerite [Al(OH) 3 ] obtained from a wet chemical route, with the hydrolysis of aluminum alkoxides [70]. The desired phase is achieved by controlling the temperature of calcination.…”

Section: Amorphous and γ Aluminamentioning

confidence: 99%

Alumina applied in bone regeneration: Porous α-alumina and transition alumina

et al. 2022

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Alumina is a polymorphic bioceramic that has been extensively investigated for application in bone regeneration. Dense α-alumina has been considered a suitable biomaterial for dental and orthopedic implants due to its superior mechanical properties. However, its use is limited due to its high inertia in a biological environment. Recent investigations have focused on its distinct phases and surface characteristics through the control of morphology, physical properties, and chemical composition to enhance bioactivity. This article presents a brief review of the developments in porous α-alumina and amorphous-γ-alumina transition. Most studies have shown that composites and alumina coated with bioactive materials, high surface area, and hydroxylated surface can significantly improve biological properties. Cellular responses such as fixation, growth, and proliferation, as well as biomineralization, are the main studies to validate improvements in bioactive properties.

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Catalytic upgrading of crude tire oil produced from hydrothermal liquefaction of scrap tire using Pd/Al2O3 nanocomposite

Izadi

Baghdadi

Pazoki

2023

Fuel

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Identification of amorphous and crystalline phases in alumina entity and their contribution to the properties of the palladium catalyst

Cited by 9 publications

References 37 publications

Deep Insights into Heavy Oil Upgrading Using Supercritical Water by a Comprehensive Analysis of GC, GC–MS, NMR, and SEM–EDX with the Aid of EPR as a Complementary Technical Analysis

Deep Insights into Heavy Oil Upgrading Using Supercritical Water by a Comprehensive Analysis of GC, GC–MS, NMR, and SEM–EDX with the Aid of EPR as a Complementary Technical Analysis

Alumina applied in bone regeneration: Porous α-alumina and transition alumina

Catalytic upgrading of crude tire oil produced from hydrothermal liquefaction of scrap tire using Pd/Al2O3 nanocomposite

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