Introduction of an organic acid phase changing material into metal–organic frameworks and the study of its thermal properties

Abstract

A facile solution impregnation method to access a novel type of shape-stabilized PCM employing metal–organic frameworks as the matrix.

Alkylated Meso‐Macroporous Metal–Organic Framework Hollow Tubes as Nanocontainers of Octadecane for Energy Storage and Thermal Regulation

“…The comparison of the thermal properties of octadecane@Cr‐MIL‐101‐6C FSPCM in the present study with those of recently reported form‐stable composites is shown in Figure d and Table S8 (Supporting Information) . It can be seen that compared to other octadecane‐based FSPCMs (Table S8, entries 1–4, Supporting Information), the octadecane@Cr‐MIL‐101‐6C FSPCM has higher melting enthalpy (Table S8, entry 5, Supporting Information).…”

Novel semi‐interpenetrating network structural phase change composites with high phase change enthalpy

“…Among the numerous methods for TES, the application of phase change materials (PCMs) has become a research hotspot because PCMs show high latent heat during phase transition . However, classical solid–liquid PCMs, such as fatty acid, fatty alcohol, fatty hydrocarbon, paraffin, and polyethylene glycol (PEG), are made disadvantageous by the issue of leakage. To solve the leakage problem, many studies have proposed various methods, including the microcapsule method, graft copolymerization, and polymerization .…”

Sugar-alcohol@ZIF nanocomposites display suppressed phase-change temperatures

“…Routes for encapsulation cover a wide range of techniques such as connement to core-shell polymer architectures, 12 infusion into 3D porous frameworks, [13][14][15] and aided diffusion into carbon nanotubes, 16 nanobers, 17 and metal-organic frameworks (MOFs). [18][19][20][21][22][23] Owing to enhanced surface chemical effects at the nanoscale, PCM connement has in many cases been shown to favourably impact thermodynamic properties, offering more efficient heat transfer, suppressing supercooling and accommodating volumetric changes. 4,19 Connement can also involve complex, multi-step syntheses and expensive materials like carbon nanotubes that prohibit production at meaningful scale.…”

“…[18][19][20][21][22][23] Owing to enhanced surface chemical effects at the nanoscale, PCM connement has in many cases been shown to favourably impact thermodynamic properties, offering more efficient heat transfer, suppressing supercooling and accommodating volumetric changes. 4,19 Connement can also involve complex, multi-step syntheses and expensive materials like carbon nanotubes that prohibit production at meaningful scale. As such, materials with a high degree of nanoporosity, like MOFs for example, are one of the few candidates that offer true, three-dimensional nanoconnement.…”

“…MOFs also can oen be synthesized easily at scale and tend to remain stable even at high temperatures. 24 A variety of MOF-PCM composites have been synthesized and oen, as exemplied by the works of Atinafu, 18,21 Tang 20 and Luan et al, 19 rely on polyethylene glycol (PEG) or organic acids as the PCM. Amongst these studies, Tang et al report the highest latent heats (DH L $ 180 J g À1 ).…”