Preparation before the experiment of hydrogen analyzer

Preparation before the experiment of hydrogen analyzer

(1) Clean the stainless steel combustion tube, porcelain boat, drying bottle and other appliances separately.
(2) Load the appropriate amount of reagent into one of the glass purification bottles, and put the color-changing silica gel. There is a margin of about 20-30mm at the mouth of the bottle to install absorbent cotton, cover the rubber stopper, and install the other two dry bottles Into the alkali asbestos and anhydrous magnesium perchlorate, the requirements for drugs: change silica gel (industrial product), alkali asbestos chemically pure; anhydrous magnesium perchlorate grade two, particle size 1-3 mm, chemically pure. Then install the second grade of wire-mounted copper oxide (HG3-1288) into the stainless steel tube. The loading volume is about 200mm. The two ends should be blocked with quartz wool or aluminum silicate fiber cotton at the 800 degree of the furnace, and the other end ) And the rubber plug with the air inlet pipe is well plugged. The pyrolysis product of silver permanganate is filled in the combustion pipe, and the loading amount is about 140mm long. Attached is the method for preparing the pyrolysis product of silver permanganate. Weigh 100 grams of potassium permanganate (analytical or chemically pure) dissolved in 2 liters of distilled water, and another 107.5 grams of silver nitrate (analytically or chemically pure) are first dissolved in about 50ml of distilled water, under constant stirring, pour into boiling potassium permanganate solution, stir evenly, gradually let cool, after standing overnight will produce shiny dark purple crystals, washed with distilled water several times, at 60 ℃ -80 ℃ Dry for 4 hours, take a small amount of crystals in porcelain, slowly heat on an electric furnace until it suddenly decomposes, and get loose silver-gray residues, collect them in the grinding bottle for use. Undecomposed silver permanganate should not be stored in large quantities to avoid thermal decomposition , Not safe.
(3) Connect the leads used in the instrument, connect the gas circuit and the power supply. After checking, the power switch can be turned on, and the sample analysis can be done when the furnace temperature rises to the temperature.

测氢仪实验前的准备工作

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