tailieunhanh - Thermodynamics Interaction Studies Solids, Liquids and Gases 2011 Part 12

Tham khảo tài liệu 'thermodynamics interaction studies solids, liquids and gases 2011 part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 540 Thermodynamics - Interaction Studies - Solids Liquids and Gases defined by the macroscopic parameter of adsorption density mol m2 can be inevitably ambiguous because the chemical potential of mixed microscopic MEA states cannot be unambiguously described by the macroscopic parameter of adsorption density. Failure in recognizing this theoretical gap has greatly hindered our understanding on many adsorption related issues especially in applied science and technology fields where the use of surface concentration mol m2 is common or inevitable. HO AsO4 Adsorption reaction equations AG K 0 Bidentate binuclear complexes H2AsO4- H2O 12 Ti2 OH 4 H2O 6 4 I J LOLAsOyOI I - H2O 2 12H2O 1 H2AsO4- H2OX2 Ti2 OH 5 H2O 5 3 TÌ2 OH 4 H2O 4AsO2 Oh 2 3 H2O 2 OH- H2O 11 2 H2AsO4- H2O 12 Ti2 OH 6 H2O 4 2 TÌ2 OH 4 H2O 4AsO2 Oh 2 3 H2O 2 2oH- H2O 10 0 Monodentate mononuclear complexes H2AsO4- H2O 12 Ti2 OH 4 H2O 6 4 TÌ2 OH 4 H2O 5As02 OH 2 3 H2O I2H2O 1-1 H2AsO4- H2O 12 Ti2 OH 5 H2O 5 3 TÌ2 0h 4 H2O 5As02 OH 2 3 H2O OH- H2O 11 1-2 H2AsO4- H2O 12 Ti2 OH 5 H2O 5 3 T12 OH 5 h2o 4As02 OH 2 2 H2O I2H2O 2 H2AsO4- H2O 12 Ti2 OH 6 H2O 4 2 TÌ2 OH 5 H2O 4AsO2 Oh 2 2 H2O 0h- H2O 11 0 H-bond complexes H2AsO4- H2O 12 Ti2 OH 4 H2O 6 4 Ti2 OH 4 H2O 6As02 oH 2 3 I2H2O 1 H2AsO4- H2O 12 Ti2 OH 5 H2O 5 3 T12 OH 4 h2o 6As02 OH 2 3 oH- H2O 11 2 H2AsO4- H2OX2 Ti2 OH 6 H2O 4 2 TÌ2 OH 4 H2O 6As02 0h 2 3 2OH- H2O 10 Table 2. Calculated AGads kJ mol and equilibrium adsorption constant K at 25 C of arsenate on various protonated Ti- hydr oxide surfaces. Metastable-equilibrium adsorption MEA theory pointed out that adsorbate would exist on solid surfaces in different forms . MEA states and recognized the influence of adsorption reaction kinetics and reactant concentrations on the final MEA states various outer-sphere and inner-sphere complexes