dehydration reaction


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dehydration reaction

a chemical reaction in which two molecules join to form a larger one, at the same time forming a molecule of water.
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5) Dehydration reaction takes place when orthosilicic acid absorbing much reaction heat, which reduces the reaction temperature tremendously and produces inorganic silica microspheres, the result verifies the results of Figs.
6c, the spherical crevice between cavity and sphere is generated by the intermediate products of water, carbon dioxide, and sodium carbonate possibly; in addition, the dehydration reaction of orthosilicic acid will result in the contraction of inner inorganic microsphere to some extent.
The type of acidity of ILs played a significant role in the efficiency of the dehydration reaction.
Dehydration reaction assemblies (three) were designated with respect to the excess time given to each system after 2.
In the second step, the enamine A attack to aromatic aldehydes (addition reaction) to give intermediates B, which further undergoes dehydration reaction to give 1,6-naphthyridine 3 (Step 3).
Compared with the dehydration of lactic acid in liquid phase or supercritical water, yield of acrylic acid was higher in gas phase dehydration reaction (Odell et al.
Endothermic peaks observed at between 110 and 121[degrees]C in the DTA curves may be attributed to dehydration reaction.
1] for dehydration reaction at low temperature and a diffusion type kinetic model with about 124.
In the annealing process, the dissociative hydroxyl groups in the PVA chains go through dehydration reaction resulting in more crystalline region.
Also, regarding the PVA membrane, hydroxyl groups of the PVA chains go through dehydration reaction and more compact polymer chains are formed in the membrane matrix [17].
Thus, a high heating rate provides a shorter time for the dehydration reactions.