The new life of traditional water treatment flocculant polyaluminum chloride (PAC): a green and efficient micro–nano reactor catalyst in alcohol solvents

Abstract

The polyaluminum chloride–ethanol micro–nano reactor is a green, efficient, easy-to-handle and economical catalyst for catalyzing organic synthesis reactions.

Ecofriendly Synthesis of DHPMs using Copper-based Nano catalysts and Evaluation of Antibacterial Activity

“…Hence, many strategies have been developed for the generation of Biginelli compounds which involve the use of new catalytic systems, viz. ZrO2/La2O3, [31] nano-γ-Fe2O3, [32] H3PMo12O4, [30] Fe3O4@ Ag-S-CH2-COOH, [33] (-)-4,5-Dimethyl-3,6-bis(O-tolyl)-1,2-benzenedisulfonimide, [34] Al(III)MOF, [35] polyaluminum chloride, [36] Fe3O4 @SiO2-ATPS-EDTA-asparagine, [37] InBr3, [38] Cu(II) complexes, [39] and so forth (Table 1). Though most of the reported catalysts listed in Table 1 require mild conditions to carry out the reaction yet their preparation is a tedious process, viz.…”

Exploring the In Situ Formation Mechanism of Polymeric Aluminum Chloride–Silica Gel Composites under Mechanical Grinding Conditions: As a High-Performance Nanocatalyst for the Synthesis of Xanthene and Pyrimidinone Compounds

“…Because of its rich metal cation structure (sites of Lewis acid), poly(aluminum chloride) has been shown to be a reliable and ecologically acceptable catalyst for the production of bis-indolemethane and pyrimidinone molecules. 21 , 22 However, there are still issues with metal loss and solvent recovery challenges. The clever combination of PAC materials with mechanochemistry has the potential to tackle the challenges mentioned above while also bringing fresh ideas for its application in catalysis.…”

“…Poly­(aluminum chloride) (PAC), as an inorganic high molecular polymer with a unique polynuclear Al–O structure and distinctive electrical properties, is frequently utilized in the flocculation process of water treatment. − PAC materials can be produced from ore materials or chemical waste and have the advantages of being simple to prepare, widely available, and inexpensive. Because of its rich metal cation structure (sites of Lewis acid), poly­(aluminum chloride) has been shown to be a reliable and ecologically acceptable catalyst for the production of bis-indolemethane and pyrimidinone molecules. , However, there are still issues with metal loss and solvent recovery challenges. The clever combination of PAC materials with mechanochemistry has the potential to tackle the challenges mentioned above while also bringing fresh ideas for its application in catalysis.…”

In situ preparation of a ferric polymeric aluminum chloride–silica gel nanocatalyst by mechanical grinding and its solid-phase catalytic behavior in organic synthesis

“…These materials have a multinuclear metal cation structure (M-O) and have been proven to be highly effective flocculants in water treatment processes, far outperforming traditional water treatment agents such as alum. 16,17 Previous studies have shown that aluminium polymeric chloride (PAC) can be used in green synthesis 18,19 and catalysis due to its good environmental compatibility and multinuclear polyhydroxy group structure. 20 The use of inorganic polymers to replace the research strategy of using conventional Lewis acids for mechanical chemical production applications will likely be one of the ways to break the bottleneck in the development of LASSC catalyst systems.…”