Reactivation of Cu-promoted lanthanum phosphate

1984 ◽  
Vol 24 (3-4) ◽  
pp. 213-215 ◽  
Author(s):  
N. S. Figoli ◽  
C. L. Lazzaroni ◽  
H. R. Keselman ◽  
P. C. L'Argentiere
Keyword(s):  
Lanthanum Phosphate

High resolution electron microscopy of lanthanum phosphate crystals

1978 ◽  
Vol 36 (1) ◽  
pp. 274-275
Author(s):  
J. C. Wheatley ◽  
J. M. Cowley
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
High Resolution ◽  
Petroleum Industry ◽  
High Resolution Electron Microscopy ◽  
Lanthanum Phosphate ◽  
Good Catalyst ◽  
Resolution Electron ◽  
Good Catalytic Activity ◽  
Physical And Chemical

Rare-earth phosphates are of particular interest because of their catalytic properties associated with the hydrolysis of many aromatic chlorides in the petroleum industry. Lanthanum phosphates (LaPO4) which have been doped with small amounts of copper have shown increased catalytic activity (1). However the physical and chemical characteristics of the samples leading to good catalytic activity are not known.Many catalysts are amorphous and thus do not easily lend themselves to methods of investigation which would include electron microscopy. However, the LaPO4, crystals are quite suitable samples for high resolution techniques.The samples used were obtained from William L. Kehl of Gulf Research and Development Company. The electron microscopy was carried out on a JEOL JEM-100B which had been modified for high resolution microscopy (2). Standard high resolution techniques were employed. Three different sample types were observed: 669A-1-5-7 (poor catalyst), H-L-2 (good catalyst) and 27-011 (good catalyst).

Lanthanum phosphate foam as novel heterogeneous nanocatalyst for biodiesel production from waste cooking oil

2021 ◽  
Author(s):  
Shahabaldin Rezania ◽  
Zahra Sotoudehnia Korrani ◽  
Mohammad Ali Gabris ◽  
Jinwoo Cho ◽  
Krsihna Kumar Yadav ◽  
...  
Keyword(s):  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Heterogeneous Nanocatalyst ◽  
Lanthanum Phosphate ◽  
Cooking Oil

Synthesis and Near-Infrared Fluorescent Properties of Nd3+-Yb3+ Co-Doped Lanthanum Phosphate

2012 ◽  
Author(s):  
Yuechan Cao ◽  
Zongyan Zhao ◽  
Zhaoyi Yin ◽  
Zhiguo Song ◽  
Dacheng Zhou ◽  
...  
Keyword(s):  
Near Infrared ◽  
Fluorescent Properties ◽  
Lanthanum Phosphate ◽  
Co Doped

A Facile Aqueous Sol-Gel Process for the Synthesis of Alumina-Lanthanum Phosphate Nanocomposite

2008 ◽  
Vol 91 (7) ◽  
pp. 2415-2418 ◽  
Author(s):  
Komban Rajesh ◽  
Kizhakkekilikoodayil Vijayan Baiju ◽  
Mani Jayasankar ◽  
Krishna Gopakumar Warrier
Keyword(s):  
Sol Gel ◽  
Lanthanum Phosphate ◽  
Sol Gel Process

Improvement of Oxidation Resistance of Graphite Powder Treated with Phosphate

2007 ◽  
Vol 352 ◽  
pp. 133-136 ◽  
Author(s):  
Katsumi Yoshida ◽  
Hideki Hyuga ◽  
Naoki Kondo ◽  
Hideki Kita
Keyword(s):  
Oxidation Resistance ◽  
Graphite Powder ◽  
Magnesium Phosphate ◽  
Phosphate Solution ◽  
Lanthanum Phosphate ◽  
Magnesium Phosphates

Graphite powder was treated with lanthanum, aluminum and magnesium phosphate solution, and oxidation resistance of the obtained graphite powder was evaluated. Oxidation starting temperature and oxidation completion temperature of graphite powder treated with various phosphates were 50-100oC higher than those of as-received graphite powder. Graphite powder treated with small amount of lanthanum phosphate exhibited the higher oxidation starting temperature than graphite powder treated with aluminum and magnesium phosphates. LaP5O14 would partially exited on graphite powder, and protect the edge carbon atoms of graphite and reduce the reactivity of carbon atoms toward oxygen, resulting in improving the oxidation resistance.

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