The interaction of hydrochloric acid gas and ethanol in liquid-phase under the influence of A. C. Fields

1959 ◽  
Vol 46 (8) ◽  
pp. 261-261
Author(s):  
Prakash Chandra Gupta
Keyword(s):  
Liquid Phase ◽  
Hydrochloric Acid ◽  
Acid Gas

Cyclohexylation of Naphthalene Over USY Zeolites

1999 ◽  
Vol 64 (1) ◽  
pp. 138-148 ◽  
Author(s):  
Miroslav Michvocík ◽  
Dušan Mravec ◽  
Milan Hronec ◽  
Agáta Smiešková ◽  
Pavol Hudec
Keyword(s):  
Liquid Phase ◽  
Hydrochloric Acid ◽  
Thermal Stabilization ◽  
Y Zeolite ◽  
Zeolite Structure ◽  
Positive Effect

The influence of thermal stabilization of NH4-Y zeolite and modification of USY zeolites with solutions of hydrochloric acid on the cyclohexylation of naphthalene in the liquid phase was studied. Removal of the part of extra-framework aluminium from zeolite structure has a positive effect on both conversion of naphthalene and amount of dicyclohexylnaphthalenes formed. Modification of zeolites leads to an increase in conversion and selectivity of β-substitution in the naphthalene cyclohexylation.

scholarly journals V. On the action of acids on glycol (Second notice.)

1860 ◽  
Vol 10 ◽  
pp. 114-122
Keyword(s):  
Acetic Acid ◽  
Hydrochloric Acid ◽  
Large Scale ◽  
Identity Theory ◽  
The Body ◽  
Acid Gas

Since my last communication to the Society, I have discovered a more convenient process for the preparation of chloracetine of glycol. I have ascertained that the monoacetate of glycol is as readily converted into this substance by the action of hydrochloric acid, as a mixture of acetic acid and glycol. As the monoacetate is easily obtained, and for this purpose need not be quite pure, it is possible by this method to prepare the body in question on a large scale and with great facility. It is simply necessary to conduct a stream of dry hydrochloric acid gas into the monoacetate, maintained at the temperature of 100° C., till the quantity of oil precipitated on the addition of water ceases to increase. The whole is then well washed with water, dried by means of chloride of calcium, and distilled. Almost the entire quantity passes over between 144° and 146° C. A portion of liquid prepared in this manner gave the following numbers on analysis, which leave no doubt as to its identity:— Theory. Experiment C 8 . . . . . 39·18 39·01 H 7 . . . . . 5·71 5·83 O 4 . . . . . 26·14 . . Cl . . . . . . . . . . . . . . . . 28.97 . . 100·00

scholarly journals Solid-liquid systems for the hydrolysis of glycoalkaloids from potato (Solanum tuberosum L) tuber sprouts and solanidine isolation

2003 ◽  
Vol 57 (6) ◽  
pp. 288-292
Author(s):  
Nada Nikolic ◽  
Mihajlo Stankovic ◽  
Milorad Cakic
Keyword(s):  
Solanum Tuberosum ◽  
Liquid Phase ◽  
Hydrochloric Acid ◽  
Solid Phase ◽  
Solanum Tuberosum L ◽  
Volume Ratio ◽  
Liquid Systems ◽  
Pharmacologically Active ◽  
Solid Liquid ◽  
Hydrolysis Of

Solanidine (C17H43O/V) is a steroidal aglycone of glycoalkaloids and an important precursor for the synthesis of hormones and some pharmacologically active compounds. Glycoalkaloids are hydrolysed by mineral acid yielding solanidine and a carbohydrate moiety. In this paper the kinetics of hydrolysis of glycoalkaloids from potato (Solanum tuberosum L) tuber sprouts by using solid-liquid systems were studied as well as solanidine isolation from the liquid phase of the system. The dried and milled tuber sprouts of potato were used as the solid phase and solutions of hydrochloric acid of different concentration in 96 % vol. ethanol, mixed with chloroform in a volume ratio of 2:3, 1:1, 3:2 and 4:1, were used as the liquid phase. The aim of the paper was to choose the optimal concentration of hydrochloric acid in ethanol, the volume ratio of hydrochloric acid in ethanol to chloroform in the liquid phase and the time for solanidine hydrolytic extraction, as well as to isolate solanidine from the liquid phase.

scholarly journals THE ACTION OF HYDROCHLORIC ACID GAS UPON SODIUM VANADATE.

1894 ◽  
Vol 16 (9) ◽  
pp. 578-580 ◽  
Author(s):  
Edgar F. Smith ◽  
Jos. G. Hibbs
Keyword(s):  
Hydrochloric Acid ◽  
Sodium Vanadate ◽  
Acid Gas
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