Isothermal absorption curve correction method based on gravimetric method
A technology of isotherm adsorption curve and isotherm adsorption, which is applied in the direction of material absorption and weighing, analysis of materials, instruments, etc., can solve the problem of incorrect calculation of adsorption phase density, inability to achieve accurate correction of isotherm adsorption curves, and poor universality of isotherm adsorption models. And other issues
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[0049] The invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation on the invention.
[0050] Select certain block coal rock sample below in conjunction with accompanying drawing and describe the present invention in detail.
[0051] A kind of isotherm adsorption curve correction method based on gravimetric method, comprises the following steps:
[0052] Step 1, adopt laboratory standard sample preparation method, use 60 order and 80 order laboratory standard sample sieves to make particle diameter be the granular sample of 60-80 order (0.18-0.25mm) size;
[0053] Step 2. Before the isothermal adsorption test, carry out a blank test based on the gravimetric isothermal adsorption instrument. The adsorbate used for the test is 99.999% high-purity helium; set the same test temperature as the isothermal adsorption of coal rock sample methane, and set a total of 13 pressure p...
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