Tuning the porosity of triangular supramolecular adsorbents for superior haloalkane isomer separations

Abstract

Distillation-free separations of haloalkanes isomers represents a persistent challenge for the chemical industry. Several classic molecular sorbents show high selectivity in the context of such separations; however, most suffer from...

Surface environment complication makes Ag29 nanoclusters more robust and leads to their unique packing in the supracrystal lattice

“…In this context, such unique intercluster channels may render the Pt 1 Ag 28 -PPh 2 py crystals potential nanomaterials for gas adsorption-related applications. 61–65…”

Pillar[3]trianglamines: deeper cavity triangular macrocycles for selective hexene isomer separation

“…[44][45][46] Recently, we reported a series of trianglimine and trianglamine macrocycles for the adsorptive separation of hydrocarbons and haloalkanes. [47][48][49] Attempts to employ our original system for linear hexene isomer separation were unsuccessful. A report by Huang and co-workers highlighted the impact of the macrocyclic cavity and hydrogen acceptors in the sorting of positional isomers using pillar [5]arenes.…”

Guest-induced amorphous-to-crystalline transformation enables sorting of haloalkane isomers with near-perfect selectivity

“…In industry, recyclability is one of the vital parameters to evaluate an adsorbent. We proved that BrP[5]L with amorphous nature could be wholly regenerated by simply heating 1-BBU⊂BrP[5]L at 120°C under vacuum, as characterized by 1 H NMR, TGA, and PXRD (figs. S66 to S69).…”

“…With the increasing global demand for petrochemicals, the exploitation of new materials or strategies, expected to reduce the environmental impact and operation cost/complexity of industrial separation and purification, is of great significance and imperative. Among these, the energy-efficient separation of haloalkane compounds is a major industrial sustainability challenge (1)(2)(3). The use of macromolecular porous materials, such as metal-organic frameworks (4)(5)(6), zeolites (7)(8)(9), porous organic polymers (10)(11)(12)(13), and covalent organic frameworks (14)(15)(16)(17)(18), in which the building blocks are linked together by covalent or coordinative bonds is considered one solution to solving this problem.…”