scholarly journals The Electrokinetic Potential and Surface Acidity of Titanium Dioxide

1963 ◽  
Vol 36 (10) ◽  
pp. 1369-1370 ◽  
Author(s):  
Tetsuo Morimoto ◽  
Masashi Sakamoto
Keyword(s):  
Titanium Dioxide ◽  
Electrokinetic Potential ◽  
Surface Acidity

Effect of TiO2 crystal form on the denitration performance of Ce–W–Ti catalyst

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Xue Bian ◽  
Yuntao Yu ◽  
Nana Hao ◽  
Wenyuan Wu
Keyword(s):  
Titanium Dioxide ◽  
Mixed Crystal ◽  
Surface Acidity ◽  
High Surface ◽  
Crystal Form ◽  
Large Specific Surface Area ◽  
Metatitanic Acid ◽  
Pure Phase ◽  
Crystal Phases ◽  
Better Than

Abstract Titanium dioxide supports, which were prepared by roasting metatitanic acid under different conditions, were used to prepare a series of Ce–W–Ti catalysts. The structure and denitration properties of the catalyst were studied. The results showed that TiO2 had different crystal types (mixed crystal phases with different proportions of anatase and rutile) under different roasting conditions, and the denitration efficiency of mixed crystal was better than that of pure phase TiO2. Ce–W/200 °C-1 hTiO2 catalyst exhibited a prominent NO conversion rate, and it can reach higher than 90% at a temperature range from 250 to 500°C. The large specific surface area, low content of rutile TiO2 in the support, high content of chemical adsorbed oxygen and high surface acidity were favorable to denitration performance of Ce–W–Ti catalyst.

FT-IR characterization of the surface acidity of different titanium dioxide anatase preparations

1985 ◽  
Vol 14 ◽  
pp. 245-260 ◽  
Author(s):  
Guido Busca ◽  
Helene Saussey ◽  
Odette Saur ◽  
Jean Claude Lavalley ◽  
Vincenzo Lorenzelli
Keyword(s):  
Titanium Dioxide ◽  
Surface Acidity ◽  
Ft Ir

Über die Chemie der Oberfläche des Titandioxids, V Die Oberflächenacidität von Titandioxid und von mit Phosphationen belegtem Titandioxid /On the Chemistry of the Surface of Titaniumoxide, V Surface Acidity of Titanium Dioxide and of Titanium Dioxide Covered with Adsorbed Phosphate Ions

1978 ◽  
Vol 33 (11) ◽  
pp. 1238-1241 ◽  
Author(s):  
J. Cornejo ◽  
J. Steinle ◽  
H. P. Boehm
Keyword(s):  
Titanium Dioxide ◽  
Ion Exchange ◽  
Phosphoric Acid ◽  
Surface Acidity ◽  
Acidity Constant ◽  
Acidity Constants ◽  
Oh Groups ◽  
Phosphate Ions ◽  
Titration Technique

Abstract The acidity of surface OH groups on TiO2 (anatase and rutile) was determined using the Benesi titration technique. The most acidic groups have acidity constants (Ho) between 3 and 5. On treatment with solutions of phosphoric acid or phosphates, H2PO4 -ions are adsorbed by ion exchange for basic OH -ions of the surface. The chemisorbed H2PO4 -ions react strongly acidic with an acidity constant Ho between -5.6 and -3.3. Possible reasons for this extreme increase in acidity are briefly discussed.

scholarly journals The Electrokinetic Potential of Titanium Dioxide

1964 ◽  
Vol 37 (5) ◽  
pp. 719-723 ◽  
Author(s):  
Tetsuo Morimoto ◽  
Masashi Sakamoto
Keyword(s):  
Titanium Dioxide ◽  
Electrokinetic Potential

Studies on the mechanism of printing film-coated tablets containing titanium dioxide in the film by using UV laser irradiation

2009 ◽  
Vol 00 (00) ◽  
pp. 090915102728058-8
Author(s):  
Yoshiteru Kato ◽  
Yasuhiko Nakashima ◽  
Naoki Shino ◽  
Koichi Sasaki ◽  
Akihiro Hosokawa ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Laser Irradiation ◽  
Uv Laser

Development and production experience of the multilayer curtain-coated linerboard of Ji’an PM No. 3,

TAPPI Journal ◽  
2014 ◽  
Vol 13 (2) ◽  
pp. 17-25
Author(s):  
JUNMING SHU ◽  
ARTHAS YANG ◽  
PEKKA SALMINEN ◽  
HENRI VAITTINEN
Keyword(s):  
Titanium Dioxide ◽  
High Speed ◽  
Food Packaging ◽  
Production Efficiency ◽  
Positive Impact ◽  
Low Cost ◽  
Board Structure ◽  
Flexographic Printing ◽  
Curtain Coating ◽  
Coating Formulations

The Ji’an PM No. 3 is the first linerboard machine in China to use multilayer curtain coating technology. Since successful startup at the end of 2011, further development has been carried out to optimize running conditions, coating formulations, and the base paper to provide a product with satisfactory quality and lower cost to manufacture. The key challenges include designing the base board structure for the desired mechanical strength, designing the surface properties for subsequent coating operations, optimizing the high-speed running of the curtain coater to enhance production efficiency, minimizing the amount of titanium dioxide in the coating color, and balancing the coated board properties to make them suitable for both offset and flexographic printing. The pilot and mill scale results show that curtain coating has a major positive impact on brightness, while smoothness is improved mainly by the blade coating and calendering conditions. Optimization of base board properties and the blade + curtain + blade concept has resulted in the successful use of 100% recycled fiber to produce base board. The optical, mechanical, and printability properties of the final coated board meet market requirements for both offset and flexographic printing. Machine runnability is excellent at the current speed of 1000 m/min, and titanium dioxide has been eliminated in the coating formulations without affecting the coating coverage. A significant improvement in the total cost of coated white liner production has been achieved, compared to the conventional concept of using virgin fiber in the top ply. Future development will focus on combining low cost with further quality improvements to make linerboard suitable for a wider range of end-use applications, including frozen-food packaging and folding boxboard.

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