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Low permeability renders a significant fraction of coal seam gas (CSG) resources sub-economic. An effective permeability enhancement strategy is thereby crucial in monetising a large proportion of low permeability CSG resources. This paper introduces the concept of using oxidants for permeability enhancement, describes a practical screening method to evaluate potential oxidants and provides knowledge...
A novel polyethylene/palygorskite nanocomposite with excellent processability was prepared via in-situ coordination polymerization. A mixed catalyst of TiCl4/MgCl2/AIR3 was employed. Firstly the Ziegler-Natta catalyst of TiCl4/AlR3 was loaded on the surface of the nanoscale Whiskers of palygorskite to prepare the macromolecular comb. Secondly the MgCl2 catalyst was introduced into the reaction system...
Polyethylene/palygorskite nanocomposites with “macromolecular comb” structure were prepared via in situ polymerization. The TiCl4 catalyst was first loaded on the surface of the nanoscale whiskers of palygorskite. Subsequently the ethylene was introduced into the reaction system, and the polyethylene molecular chain was generated directly at the surface of the palygorskite whiskers. As a result, a...
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