Catalysis by rare earth phosphate II: Selective o-methylation of phenols by methanol in vapor phase

Author(s):  
Laurent Gilbert ◽  
Marcelle Janin ◽  
Anne-Marie Le Govic ◽  
Pascale Pommier ◽  
Alain Aubry
2000 ◽  
Vol 270 (1-3) ◽  
pp. 234-246 ◽  
Author(s):  
A.G. Shikerkar ◽  
J.A.E. Desa ◽  
P.S.R. Krishna ◽  
R. Chitra

1992 ◽  
Vol 56 (383) ◽  
pp. 235-239 ◽  
Author(s):  
Adrian A. Finch ◽  
James G. Fletcher

AbstractThe uncommon sodium rare-earth phosphate mineral vitusite-(Ce) (Na3RE(PO4)2) can be considered as the extreme product of sodium and rare-earth substitution in the apatite structure. Lesser amounts of substitution provide sodium and rare-earth-bearing apatites up to about 80 mol.% exchange; beyond this point vitusite is the stable phase. The structure of vitusite, determined previously from a synthetic analogue, can also be considered as a derivative from apatite, but with cations exchanged on sites normally occupied by anions. Vitusite can therefore be considered as a sodium- and rare-earthrich apatite end-member, with a distinct, but apatite-derived, structure, formed in highly persodic and high rare-earth environments. From an examination of the literature on diffusion in apatite, vitusite in principle could be formed from apatitesensu strictoby subsolidus diffusion in response to late-stage NaandRE-rich hydrothermal fluids.


2008 ◽  
Vol 127 (3-4) ◽  
pp. 419-428 ◽  
Author(s):  
Qingbo Liu ◽  
Zhen Zhang ◽  
Ying Du ◽  
Jing Li ◽  
Xiangguang Yang
Keyword(s):  

1998 ◽  
Vol 232-234 ◽  
pp. 286-292 ◽  
Author(s):  
R Anderson ◽  
T Brennan ◽  
G Mountjoy ◽  
R.J Newport ◽  
G.A Saunders

1965 ◽  
Vol 43 (6) ◽  
pp. 2136-2137 ◽  
Author(s):  
G. Balducci ◽  
A. Capalbi ◽  
G. De Maria ◽  
M. Guido
Keyword(s):  

2009 ◽  
Vol 21 (15) ◽  
pp. 3570-3575 ◽  
Author(s):  
Chao Zhang ◽  
Ji Chen ◽  
Xingfu Zhu ◽  
Yunchun Zhou ◽  
Deqian Li

2015 ◽  
Vol 4 (4) ◽  
pp. 966-975 ◽  
Author(s):  
Sayantani Chall ◽  
Soumya Sundar Mati ◽  
Bapi Gorain ◽  
Soumyadipta Rakshit ◽  
Subhash Chandra Bhattacharya

Toxicological assessment of synthesized and PEG functionalized lanthanum phosphate nanorods.


2015 ◽  
Vol 5 (7) ◽  
pp. 3576-3584 ◽  
Author(s):  
T. T. N. Nguyen ◽  
V. Bellière-Baca ◽  
P. Rey ◽  
J. M. M. Millet

We report the simultaneous dehydration of light alcohols over rare earth phosphate catalysts.


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