Solid–solid phase transition of tris(hydroxymethyl)aminomethane in nanopores of silica gel and porous glass for thermal energy storage

Zhai, Min; Zhang, Shiqi; Sui, Jian; Tian, Fang; Lan, Xiao

doi:10.1007/s10973-017-6223-6

Cited by 17 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For RIF, dehydration is shown at lower temperatures, followed by melting at 176.6 °C and decomposition at 194.6 °C . The TRIS thermogram shows the solid–solid phase transition (α-orthorhombic to γ-cubic-body-centered) at 132.9 °C and the melting point at 168.8 °C . For the coamorphous material, no first-order event is seen; however, increasing the heating rate to 20 °C·min –1 , the coamorphous material shows an experimental T g at about 70.0 °C (Figure S7 of the Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…12 The TRIS thermogram shows the solid−solid phase transition (α-orthorhombic to γcubic-body-centered) at 132.9 °C and the melting point at 168.8 °C. 72 For the coamorphous material, no first-order event is seen; however, increasing the heating rate to 20 °C•min −1 , the coamorphous material shows an experimental T g at about 70.0 °C (Figure S7 of the Supporting Information). The T g s of RIF and TRIS were reported in the literature to be 165.0 and 44.5 °C, respectively.…”

Section: Pxrdmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and Characterization of a Rifampicin Coamorphous Material with Tromethamine Coformer: An Experimental–Theoretical Study

Queiroz,

Barros,

de Sousa

et al. 2024

Mol. Pharmaceutics

View full text Add to dashboard Cite

Rifampicin (RIF) is an antibiotic used to treat tuberculosis and leprosy. Even though RIF is a market-available drug, it has a low aqueous solubility, hindering its bioavailability. Among the strategies for bioavailability improvement of poorly soluble drugs, coamorphous systems have been revealed as an alternative in the increase of the aqueous solubility of drug systems and at the same time also increasing the amorphous state stability and dissolution rate when compared with the neat drug. In this work, a new coamorphous form from RIF and tromethamine (TRIS) was synthesized by slow evaporation. Structural, electronic, and thermodynamic properties and solvation effects, as well as drug−coformer intermolecular interactions, were studied through density functional theory (DFT) calculations. Powder X-ray diffraction (PXRD) data allowed us to verify the formation of a new coamorphous. In addition, the DFT study indicates a possible intermolecular interaction by hydrogen bonds between the available amino and carbonyl groups of RIF and the hydroxyl and amino groups of TRIS. The theoretical spectra obtained are in good agreement with the experimental data, suggesting the main interactions occurring in the formation of the coamorphous system. PXRD was used to study the physical stability of the coamorphous system under accelerated ICH conditions (40 °C and 75% RH), indicating that the material remained in an amorphous state up to 180 days. The thermogravimetry result of this material showed a good thermal stability up to 153 °C, and differential scanning calorimetry showed that the glass temperature (T g ) was at 70.0 °C. Solubility studies demonstrated an increase in the solubility of RIF by 5.5-fold when compared with its crystalline counterpart. Therefore, this new material presents critical parameters that can be considered in the development of new coamorphous formulations.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Pxrdmentioning

confidence: 99%

Preparation and Characterization of a Rifampicin Coamorphous Material with Tromethamine Coformer: An Experimental–Theoretical Study

Queiroz,

Barros,

de Sousa

et al. 2024

Mol. Pharmaceutics

View full text Add to dashboard Cite

show abstract

“…This was because the high nanoconfinement effect brought by the MOF's nano-sized pore structure formed the PW, but limited the freedom of movement of the molecule segments and decreased the crystallinity of PW. 56 This significant effect will slightly decrease the latent heat storage capacity and phase change temperature, resulting in a different melting/solidification profile for PW/MOFs than for pure PW. Compared to S5, the enthalpy of S1 is much smaller, probably because the mass fraction of MOFs in S1 was 5% higher.…”

Section: Phase Change Properties Of Cpcmsmentioning

confidence: 99%

“…For phase transition temperatures of S1 and S5 are 52.24 and 51.49 1C, respectively, which are lower than PW and demonstrate a stable temperature range. This also can result from the confinement effect, 56 as evidence shows the phase transition temperature of PCMs adsorbed in micropores is lower than that of monolithic PCMs.…”

Section: Phase Change Properties Of Cpcmsmentioning

confidence: 99%

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

Fang

Zhou

et al. 2023

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…The solid–solid phase transition of tris (hydroxymethyl) aminomethane was studied under nanoconfinement in silica gels and porous glasses with pores ranging from 6 to 200 nm [ 178 ]. Both the transition temperature and heat of fusion decrease when lowering the pore diameters.…”

Section: Phase Change Materials Containing Porous Silica Matrices mentioning

confidence: 99%

A Review of Composite Phase Change Materials Based on Porous Silica Nanomaterials for Latent Heat Storage Applications

et al. 2021

View full text Add to dashboard Cite

Phase change materials (PCMs) can store thermal energy as latent heat through phase transitions. PCMs using the solid-liquid phase transition offer high 100–300 J g−1 enthalpy at constant temperature. However, pure compounds suffer from leakage, incongruent melting and crystallization, phase separation, and supercooling, which limit their heat storage capacity and reliability during multiple heating-cooling cycles. An appropriate approach to mitigating these drawbacks is the construction of composites as shape-stabilized phase change materials which retain their macroscopic solid shape even at temperatures above the melting point of the active heat storage compound. Shape-stabilized materials can be obtained by PCMs impregnation into porous matrices. Porous silica nanomaterials are promising matrices due to their high porosity and adsorption capacity, chemical and thermal stability and possibility of changing their structure through chemical synthesis. This review offers a first in-depth look at the various methods for obtaining composite PCMs using porous silica nanomaterials, their properties, and applications. The synthesis and properties of porous silica composites are presented based on the main classes of compounds which can act as heat storage materials (paraffins, fatty acids, polymers, small organic molecules, hydrated salts, molten salts and metals). The physico-chemical phenomena arising from the nanoconfinement of phase change materials into the silica pores are discussed from both theoretical and practical standpoints. The lessons learned so far in designing efficient composite PCMs using porous silica matrices are presented, as well as the future perspectives on improving the heat storage materials.

show abstract

Solid–solid phase transition of tris(hydroxymethyl)aminomethane in nanopores of silica gel and porous glass for thermal energy storage

Cited by 17 publications

References 30 publications

Preparation and Characterization of a Rifampicin Coamorphous Material with Tromethamine Coformer: An Experimental–Theoretical Study

Preparation and Characterization of a Rifampicin Coamorphous Material with Tromethamine Coformer: An Experimental–Theoretical Study

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

A Review of Composite Phase Change Materials Based on Porous Silica Nanomaterials for Latent Heat Storage Applications

Contact Info

Product

Resources

About

Solid–solid phase transition of tris(hydroxymethyl)aminomethane in nanopores of silica gel and porous glass for thermal energy storage

Cited by 17 publications

References 30 publications

Preparation and Characterization of a Rifampicin Coamorphous Material with Tromethamine Coformer: An Experimental–Theoretical Study

Preparation and Characterization of a Rifampicin Coamorphous Material with Tromethamine Coformer: An Experimental–Theoretical Study

Multifunctional MIL-101(Cr)-NH2/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices

A Review of Composite Phase Change Materials Based on Porous Silica Nanomaterials for Latent Heat Storage Applications

Contact Info

Product

Resources

About

Multifunctional MIL-101(Cr)-NH₂/expanded graphite/multi-walled carbon nanotube/paraffin wax composite phase change materials with excellent thermal conductivity and highly efficient thermal management for electronic devices