Polyoxometalate materials, metal-containing materials, and methods of use thereof
a technology of polyoxometalate and metal-containing materials, which is applied in the field of polyoxometalate or a metal compound, can solve the problems of reducing the potential danger of environmental contaminants, reducing the overall toxicity of cwa, and providing limited exposure to cwa
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example 1
Oxidation of CEES to CEESO by a POM / TSP Mixture Under Ambient Conditions after 40 Days
[0134]PFPE #1511 (0.525 g) was combined with AgxNa5-xPV2Mo10O40 (0.066 g, 3.81×10−5 mol) to give a 11% weight / weight POM / cream mixture. The POM / cream mixture was placed in a 18 mL glass vial fitted with a poly(tetrafluoroethylene) (PTFE) stopper. A sufficient amount of 2-chloroethyl ethyl sulfide (CEES) was added to the mixture to completely submerge the POM / cream mixture. After 40 days, 10 μL of the CEES solution surrounding the POM / cream mixture was removed and diluted into 100 μL of 2,2,2-trifluoroethanol (TFE). GC-MS of this solution showed the presence of 2-chloroethyl ethyl sulfoxide (CEESO).
example 2
Oxidation of CEES to CEESO by POM / TSP Mixtures Under Ambient Conditions
[0135]The CEES composition used in all trials was composed of 9.0 mL of CEES combined with 100 μL of 1,3-dichlorobenzene, where the 1,3-dichlorobenzene was added as an internal reference. Each POM / PFPE #1511 cream mixture (approximately 0.3 g) was smeared at the bottom of an 18 mL glass vial and fitted with a PTFE cap. The CEES composition (1.0 mL) was then added and each vial was left undisturbed for several days under ambient conditions, with periodic GC analysis of the CEES / reference solution to check for CEESO formation. For GC analysis, 10 μL of the CEES / reference solution surrounding the POM / cream mixture was diluted in 100 μL of TFE and analyzed. The results are shown in Table 1.
TABLE 1WeightTurnovers afterEntryCatalystPercenta9 Daysb1cream onlyN / A02AgNO320.3%03H5PV2Mo10O405.8%04H5PV2Mo10O4020.8%05AgxNa5−xPV2Mo10O405.6%06AgxNa5−xPV2Mo10O4020.6%07HAuCl47.1%08HAuCl4, AgNO3,7.6%5AgClO4caWeight Percent = (mass...
example 3
Catalytic Oxidation of CEES by POMs in 2,2,2-Trifluoroethanol after 14 Days Under Ambient Conditions
[0136]A CEES solution was prepared by mixing 85.8 mM of CEES; 1.51×10−5 to 1.82×10−5 mmol of catalyst; 100 μL 1,3-dichlorobenzene (internal standard); and 85 mL of 2,2,2-trifluoroethanol, at 25° C. under ambient air. In a typical run, 5.0 mL of the CEES solution was combined with enough catalyst to yield a CEES:POM ratio of 20:1, and the mixture was stirred for 14 days. The results are shown in Table 2.
TABLE 2EntryCatalystCEESO Turnoversa1AgNO30.422AgxH5−xPV2Mo10O408.133AgxH4−xPVMo11O401.184Na5PV2Mo10O400.005K5CoVW11O400.006K5CuIIPW11O3915.337AgxK12−xCe(PW11O39)24.478(NH4)2Ce(NO3)618.539AgxK5−xCuIIPW11O3915.21aTurnovers = (mol of CEESO / mol of catalyst) × 100
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