A kind of method of preparing nitrogen carbon molecular sieve by bagasse
A carbon molecular sieve and bagasse technology, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems such as the preparation of carbon molecular sieves that have not been seen, and achieve the effects of low price, wide source and uniform pore size
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Embodiment 1
[0020] A method for preparing nitrogen carbon molecular sieves from bagasse, comprising the steps of:
[0021] Step 1: After simply cleaning the bagasse, crush it mechanically to 1-3mm, heat it to 220°C by steam, keep it for 5 minutes, and release the pressure instantaneously within 0.5s to expand the bagasse cell wall fibers to obtain Expanded bagasse for later use;
[0022] Step 2: Soak the expanded bagasse in 12 times the volume of enzyme solution and hydrolyze it for 20 minutes at pH 4-5 and 90-100°C;
[0023] Step 3: Treat the solution under ultrasonic waves with a frequency of 28KHz for 35 minutes, filter, and collect the filtrate;
[0024] Step 4: Add ethanol to make the concentration in the filtrate to 85%, precipitate bagasse polysaccharide solids, and vacuum dry to obtain bagasse polysaccharide solids;
[0025] Step 5: Put the bagasse polysaccharide solid into a carbonization furnace, lay the raw materials naturally on a plane, raise the temperature to the carboniz...
Embodiment 2
[0030] A method for preparing nitrogen carbon molecular sieves from bagasse, comprising the steps of:
[0031] Step 1: After simply cleaning the bagasse, it is mechanically crushed to 1-3mm, heated to 260°C by steam, maintained for 2 minutes, and then the pressure is released instantaneously within 0.1s to expand the bagasse cell wall fibers to obtain Expanded bagasse for later use;
[0032] Step 2: Soak the expanded bagasse in 10 times the volume of enzyme solution and hydrolyze at pH 4-5 and 90°C for 25 minutes;
[0033] Step 3: Treat the solution under ultrasonic waves with a frequency of 35KHz for 40 minutes, filter, and collect the filtrate;
[0034] Step 4: adding ethanol to make the concentration in the filtrate to 90%, precipitating bagasse polysaccharide solids, and vacuum drying to obtain bagasse polysaccharide solids;
[0035] Step 5: Put the bagasse polysaccharide solid into a carbonization furnace, lay the raw materials naturally on a plane, raise the temperatur...
Embodiment 3
[0040] A method for preparing nitrogen carbon molecular sieves from bagasse, comprising the steps of:
[0041] Step 1: After simply cleaning the bagasse, crush it mechanically to 1-3mm, heat it to 190°C by steam, keep it for 5 minutes, and release the pressure instantaneously within 1 second to expand the bagasse cell wall fibers to obtain puffed Bagasse for use;
[0042] Step 2: Soak the expanded bagasse in 10 times the volume of enzyme solution and hydrolyze it at pH 4-5 at 90°C for 15 minutes;
[0043] Step 3: Treat the solution under ultrasonic waves with a frequency of 25KHz for 40 minutes, filter, and collect the filtrate;
[0044] Step 4: adding ethanol to make the concentration in the filtrate to 80%, precipitating bagasse polysaccharide solids, and vacuum drying to obtain bagasse polysaccharide solids;
[0045] Step 5: Put the bagasse polysaccharide solid into a carbonization furnace, lay the raw materials naturally on a plane, raise the temperature to the carboniza...
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