Influence of H3PMo12O40/SiO2 thermal treatment on adsorbed forms of formaldehyde and formic acid |
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| Authors: | G Ya Popova A A Budneva and T V Andrushkevich |
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| Institution: | (1) Federal Scientific Center, Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia |
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| Abstract: | Effect of the H3PMo12O40/SiO2(P-Mo-HPA) thermal treatment on adsorbed forms of HCOOH and H2CO has been studied by IR spectroscopy. On the sample pretreated at 150°C, HCOOH adsorbed mainly as hydrogen-bonded complexes.
The HPA calcination at 350°C resulted in the formation of surface formates along with hydrogen-bonded complexes. This proves
the formation of coordinatively unsaturated surface cations (Lewis acid sites) during HPA dehydration. Alteration of the surface
composition due to dehydration was found to have a major influence on the H2CO adsorbed forms. |
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| Keywords: | IR spectroscopy adsorbed forms formaldehyde formic acid dioxymethylene |
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