Synthesis and characterization of microporous pillared α‐zirconium phosphate–biphenylenebis(phosphonate)

Organic–inorganic hybrid materials based on organophosphorus coupling molecules: from metal phosphonates to surface modification of oxides

“…In addition, the distribution of micropore diameter (Fig. 4) showed the presence of well-defined micropores in the mixed samples [13]. It is worth noticing that the micropore distribution found in our mixed samples was very similar to the one obtained by Alberti and co-workers using their 'pillars with base' approach [15].…”

“…A few years ago, we proposed to prepare these materials by a sol-gel procedure, based on the non-hydrolytic condensation between an organophosphorus acid and a metal alkoxide (Eq. (1)) [13]. The same condensation reaction was initially used to prepare a-zirconium phosphate [14].…”

In‐situ Raman spectroscopy study of Ru/TiO2 catalyst in the selective methanation of CO

“…The atomic shifts show 18 irreducible representations that has 3 acoustic modes and 15 optic modes. The optic modes are: 1A1g + 1A2u + 2B1g + 1B2u + 3Eg + 2Eu . Among them only six Raman modes are active: A1g (515 cm −1 ), 2B1g (397, 519 cm −1 ) and 3Eg (144, 197, 639 cm −1 ) while rutile has four Raman active modes: A1g (612 cm −1 ), B1g (143 cm −1 ), B2g (826 cm −1 ) and Eg (447 cm −1 ).…”

Pillared metal(IV) phosphate-phosphonate extraction of actinides

“…A somewhat different procedure was applied by Medoukali et al using a solgel technique in propanol with a mixture of the biphenyldi-*Author for correspondance (E-mail: clearfield@chem.tamu.edu). phosphonic acid and phosphonic acid [7]. They claimed to have produced a complete solid solution sequence of Zr(O 3 PC 12 H 8 PO 3 ) x (HPO 4 ) 2−2x from x = 1 to 0.…”