SU94631A1 - The method of hydrolysis of cellulose with sulfuric acid - Google Patents

The method of hydrolysis of cellulose with sulfuric acid

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Publication number
SU94631A1
SU94631A1 SU441907A SU441907A SU94631A1 SU 94631 A1 SU94631 A1 SU 94631A1 SU 441907 A SU441907 A SU 441907A SU 441907 A SU441907 A SU 441907A SU 94631 A1 SU94631 A1 SU 94631A1
Authority
SU
USSR - Soviet Union
Prior art keywords
cellulose
hydrolysis
sulfuric acid
alkaline solution
acid
Prior art date
Application number
SU441907A
Other languages
Russian (ru)
Inventor
А.П. Антыков
Original Assignee
А.П. Антыков
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by А.П. Антыков filed Critical А.П. Антыков
Priority to SU441907A priority Critical patent/SU94631A1/en
Application granted granted Critical
Publication of SU94631A1 publication Critical patent/SU94631A1/en

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Description

Предметом изобретени   вл етс  сиособ гидро гиза целлюлозы серной кислоты с применением нроиесса предварительного окислени  иеллюлозы и ведени  процесса гидролиза в присутствии небольшого количества солей.The subject of the invention is a method for hydrolyzing a cellulose of sulfuric acid using the nitroide to pre-oxidize the cellulose and to carry out the process of hydrolysis in the presence of a small amount of salts.

Обычно предварительное окисление целлюлозы перед ее гидролизом достигают ири помощи различных окислителей, например, перекиси во-Дорода , или при помощи озона.Usually, the preliminary oxidation of cellulose before its hydrolysis is achieved by using various oxidizing agents, for example, hydrogen peroxide, or by using ozone.

В предлагаемом способе процесс окис, осуществл ют посредством барботажа воздуха через иагре-тый до 100 щелочной раствор (концентрации около 0,1°о) с погружеииой в него целлюлозой, что значительно упрощает процесс окислени  и повышает выход целлюлозодекстрпнов .In the proposed method, the oxide process is carried out by bubbling air through an alkaline solution up to 100 alkaline solution (concentration about 0.1 ° C) with cellulose immersed in it, which greatly simplifies the oxidation process and increases the yield of cellulose dextrose.

Дл  осуществлени  способа в слабый щелочной раствор, концентрации около 0,1 А погружаетс  це плюлозав виде беленого картона, обрезков бумаги и др. и при перемешивании в течение 15-20 мин. г(одогреваетс  острым паром до температуры 100.For carrying out the process in a weak alkaline solution, a concentration of about 0.1 A is immersed in the form of bleached cardboard, scraps of paper, etc., and with stirring for 15-20 minutes. g (heated by direct steam to a temperature of 100.

Затем при этой же температуре целлюлоза подвергаетс  окислению путем барботажа воздуха через щелочной раствор в течение 2 час.Then, at the same temperature, the cellulose is subjected to oxidation by bubbling air through an alkaline solution for 2 hours.

После этого окисленна  целлюлоза гидролизуетс  60-65%-ной серной кислотой при темиературе 100-ЮГ. Кислота подаетс  с таки.м расчетом, чтобы масса ссдержа.ш . 22-24% сериой кислоты.Thereafter, the oxidized cellulose is hydrolyzed with 60-65% sulfuric acid at temperature 100-Hg. The acid is supplied with the same .m.p. so that the mass is contained. 22-24% of seric acid.

Полученные цел.ио.юзодекстрины о.хлаждаютс  до температуры 75-80 и фильтруютс  нг нутчфильтре .The resulting ' oxydextrins are cooled to a temperature of 75-80 and the ng filter is filtered.

Выход составл ет 60-64,1 % от вз той 100%-ной целлюлозы.The yield is 60-64.1% of taken 100% cellulose.

. JVo 9463,1- 2 -. JVo 9463.1- 2 -

Предмет изобретени Subject invention

Сиособ гидролиза целлюлозы сер-что, в цел х иовышени  выхода целной кислотой с применением процессалюлозодекстринов и упрощени  про„редвар .ельиого ок„сле„и. ц.к.ГсГадо™ГбТ«Гжа°Гзл™ТThe method of hydrolysis of cellulose is sulfur, for the purpose of increasing the yield of the whole acid with the use of the process of neurodextrins and simplification of the redox procedure and the following. ts.k.GsGado ™ GBT "Gzha ° Gzl ™ T

ЛОЗЫ и ведени  процесса гидролиза вр нагретый до 100° щелочной растприсутствии небольщого количест-вор коицентрадии около 0,1% с погва солей, отличающийс , тем,ружейной в него целлюлозой.RODS and the process of hydrolysis of an alkaline solution heated to 100 ° C in the presence of a small amount of a co-centration of about 0.1% from gopwa salts, differing in that of pulp cellulose.

SU441907A 1951-01-05 1951-01-05 The method of hydrolysis of cellulose with sulfuric acid SU94631A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU441907A SU94631A1 (en) 1951-01-05 1951-01-05 The method of hydrolysis of cellulose with sulfuric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU441907A SU94631A1 (en) 1951-01-05 1951-01-05 The method of hydrolysis of cellulose with sulfuric acid

Publications (1)

Publication Number Publication Date
SU94631A1 true SU94631A1 (en) 1951-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU441907A SU94631A1 (en) 1951-01-05 1951-01-05 The method of hydrolysis of cellulose with sulfuric acid

Country Status (1)

Country Link
SU (1) SU94631A1 (en)

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