scholarly journals Structural changes in wood caused by liquid ammonia treatment.

1987 ◽  
Vol 44 (7) ◽  
pp. 563-571
Author(s):  
Yoshinori HASHIZUME ◽  
Shuji YOSHIZAWA ◽  
Tadahiro ISHII ◽  
Hirofumi YAJIMA ◽  
Takashi HANDA
Keyword(s):  
Liquid Ammonia ◽  
Structural Changes ◽  
Ammonia Treatment

scholarly journals Effects of liquid ammonia treatment on the physical properties of knit fabric

2016 ◽  
Vol 141 ◽  
pp. 012019
Author(s):  
I Y Lee ◽  
S D Kim ◽  
C S Hwang ◽  
S R Kim ◽  
S W Park
Keyword(s):  
Physical Properties ◽  
Liquid Ammonia ◽  
Ammonia Treatment

Evaluation of liquid ammonia treatment on surface characteristics of hemp fiber

Cellulose ◽  
2013 ◽  
Vol 21 (1) ◽  
pp. 569-579 ◽  
Author(s):  
Jie Zhang ◽  
Hua Zhang ◽  
Jianchun Zhang
Keyword(s):  
Liquid Ammonia ◽  
Surface Characteristics ◽  
Ammonia Treatment ◽  
Hemp Fiber

Effects of biowashing and liquid ammonia treatment on the physical characteristics and hand of denim fabric

2015 ◽  
Vol 131 (3) ◽  
pp. 192-199 ◽  
Author(s):  
In Yeol Lee ◽  
Go Eun Jeong ◽  
Suk Rae Kim ◽  
Carl Bengelsdorff ◽  
Sung Dong Kim
Keyword(s):  
Liquid Ammonia ◽  
Physical Characteristics ◽  
Ammonia Treatment ◽  
Denim Fabric

scholarly journals Unique thermodynamic relationships for Δf H o and Δf G o for crystalline inorganic salts. I. Predicting the possible existence and synthesis of Na2SO2 and Na2SeO2

2012 ◽  
Vol 68 (5) ◽  
pp. 511-527 ◽  
Author(s):  
Ángel Vegas ◽  
Joel F. Liebman ◽  
H. Donald Brooke Jenkins
Keyword(s):  
High Pressure ◽  
Solid State ◽  
Alkali Metal ◽  
Liquid Ammonia ◽  
Structural Changes ◽  
Target Material ◽  
The Other ◽  
Inorganic Salts ◽  
Linear Relationships ◽  
The Stability

The concept that equates oxidation and pressure has been successfully utilized in explaining the structural changes observed in the M 2S subnets of M 2SO x (x = 3, 4) compounds (M = Na, K) when compared with the structures (room- and high-pressure phases) of their parent M 2S `alloy' [Martínez-Cruz et al. (1994), J. Solid State Chem. 110, 397–398; Vegas (2000), Crystallogr. Rev. 7, 189–286; Vegas et al. (2002), Solid State Sci. 4, 1077–1081]. These structural changes suggest that if M 2SO2 would exist, its cation array might well have an anti-CaF2 structure. On the other hand, in an analysis of the existing thermodynamic data for M 2S, M 2SO3 and M 2SO4 we have identified, and report, a series of unique linear relationships between the known Δf H o and Δf G o values of the alkali metal (M) sulfide (x = 0) and their oxyanion salts M 2SO x (x = 3 and 4), and the similarly between M 2S2 disulfide (x = 0) and disulfur oxyanion salts M 2S2O x (x = 3, 4, 5, 6 and 7) and the number of O atoms in their anions x. These linear relationships appear to be unique to sulfur compounds and their inherent simplicity permits us to interpolate thermochemical data (Δf H o) for as yet unprepared compounds, M 2SO (x = 1) and M 2SO2 (x = 2). The excellent linearity indicates the reliability of the interpolated data. Making use of the volume-based thermodynamics, VBT [Jenkins et al. (1999), Inorg. Chem. 38, 3609–3620], the values of the absolute entropies were estimated and from them, the standard Δf S o values, and then the Δf G o values of the salts. A tentative proposal is made for the synthesis of Na2SO2 which involves bubbling SO2 through a solution of sodium in liquid ammonia. For this attractive thermodynamic route, we estimate ΔG o to be approximately −500 kJ mol−1. However, examination of the stability of Na2SO2 raises doubts and Na2SeO2 emerges as a more attractive target material. Its synthesis is likely to be easier and it is stable to disproportionation into Na2S and Na2SeO4. Like Na2SO2, this compound is predicted to have an anti-CaF2 Na2Se subnet.

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