Synthesis And Characterization Of Polynuclear Hydroxyl Complex Al-An Agent Of Solid Pillarization And High Efficiency Flocculation

Aiming at the synthesis of polynuclear hydroxyl complex Al hydrochlorate-An agent of Solid pillarization for pillared interlayed clays prepared by dried methods and high efficiency flocculation by different means and in different conditions, amounts of experiments have been carried out.A high purification water well dissolved 13-nuclear hydroxyl complex Al hydrochlorate has been synthesized first by means of Al+HCl(aq),Al+AlCl3(solution),resin adsorption and distillation Aids solution accompanied by makeup water in China.Its chemical constituents and structure were identified by methods of chemical analysis,XRD,TG-DTA and Al-Ferron timed complex colorimetric , at the same time,the comparision of different methods has been carried out.The product,with chemical formula of 5AlCl3-8Al (OH) 3-37.5H2O showed by results,can be well dissolved in water and methanol but hardly in ethanol.Featured by well controlled conditions,all the four means show great improvement in efficiencyA new type high efficiency flocculation agent is hopefully to be exploited supported by better removal turbidity than AlCl3,Al2(SO4)3 and PAC.A efficient solid pillarization can also be exploited supported by the results of experiments done on its insertion into Montmorillonite layers by dried means.Meanwhile,new types crystal of AlCl3- 6H20 and CuSO4-5H2O have been obtained from the different crystallization conditions.Four new types of crystal structures of AlCl3-6H2O have been produced through adjusting the solution pH by means of resin adsorption and distillation companied by makeup water,their structures have all been identified by XRD,and TG-DTA,signal crystal have been cultivated for one of the four kinds crystal followed by its structure identification by single-crystal X-raydiffraction, as the results showed, all the molecular structures have changed from R3c to R3cwhich are enriching the crystallogical of AlCU- 6H2O greatly.A new type of crystal structure of CuSO4-5H2O has been resulted through adjusting the pH of CuSO4-5H2O solution .As the XRD and TG-DTA and single-crystal X-ray diffraction indicated,there are great difference in crystal cell parameters,crystal density and number of molecular in per crystal cell between references showed.