Dielectric and structural characteristics of Ta2O5 anodic films formed in phosphoric acid electrolytes

1987 ◽  
Vol 22 (5) ◽  
pp. 1785-1789 ◽  
Author(s):  
I. Montero ◽  
J. M. Albella ◽  
J. M. Mart�nez-Duart ◽  
L. Soriano
Keyword(s):  
Phosphoric Acid ◽  
Structural Characteristics ◽  
Anodic Films

Insights into structural characteristics and the mechanism of silicate-based calcium phosphates with phosphoric acid modulation

2020 ◽  
Vol 46 (3) ◽  
pp. 3456-3463 ◽  
Author(s):  
Zhengwen Ding ◽  
Qiyi Zhang ◽  
Yanan Wu ◽  
Mizhi Ji ◽  
Hong Chen ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Calcium Phosphates ◽  
Structural Characteristics

scholarly journals A novel surfactant-assisted dilute phosphoric acid plus steam explosion pretreatment of poplar wood for fermentable sugar production

2021 ◽  
Author(s):  
Denghui Tong ◽  
Peng Zhan ◽  
Weifeng Zhang ◽  
Yongcai Zhou ◽  
Yilei Huang ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Residence Time ◽  
Steam Explosion ◽  
Biomass Conversion ◽  
Structural Characteristics ◽  
Enzymatic Saccharification ◽  
Sugar Production ◽  
Fermentable Sugar ◽  
Steam Explosion Pretreatment ◽  
Before And After

Abstract Pretreatment is an indispensable process in lignocellulosic bioethanol production. In this work, a surfactant agent JFC was introduced into the dilute phosphoric acid plus steam explosion pretreatment scheme for fermentable sugar production using poplar as substrate. Four crucial factors (phosphoric acid concentration, surfactant concentration, pressure, and residence time) affecting the pretreatment efficiency were optimized using the single factor tests. The optimal parameters obtained were as follows: 1:2.5 solid/liquid rate, 2 h pre-soaking time, 1.5 %(v/v) JFC-M + 2.0 wt% phosphoric acid, 2.0 MPa pressure, and 120 s residence time, resulting in a maximum cellulose recovery rate of 86.33 % and enzymatic saccharification rate of 84.62 %, which was 38.97 % higher than that of control. The morphological and structural characteristics of samples before and after pretreatment, were characterized by the scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) method. The addition of JFC-M was of a notable influence in overcoming biomass recalcitrance and boosting cellulose digestion, showing great application potentials in biomass conversion process.

The Morphology of Sealed Anodic Films Formed on Aluminium in Phosphoric Acid

1975 ◽  
Vol 53 (1) ◽  
pp. 97-102 ◽  
Author(s):  
G. E. Thompson ◽  
R. C. Furneaux ◽  
G. C. Wood
Keyword(s):  
Phosphoric Acid ◽  
Anodic Films

Dielectric properties of anodic films formed on sputtering-deposited tantalum in phosphoric acid solution

2003 ◽  
Vol 429 (1-2) ◽  
pp. 238-242 ◽  
Author(s):  
Q Lu ◽  
S Mato ◽  
P Skeldon ◽  
G.E Thompson ◽  
D Masheder
Keyword(s):  
Dielectric Properties ◽  
Phosphoric Acid ◽  
Acid Solution ◽  
Phosphoric Acid Solution ◽  
Anodic Films

SSIMS, XPS and microstructural studies of ac-phosphoric acid anodic films on aluminium

1990 ◽  
Vol 15 (6) ◽  
pp. 369-376 ◽  
Author(s):  
D. Johnson ◽  
J. C. Vickerman ◽  
R. H. West ◽  
J. A. Treverton ◽  
J. Ball
Keyword(s):  
Phosphoric Acid ◽  
Anodic Films ◽  
Microstructural Studies
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