Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The dynamic adsorption of Xe on a fixed bed adsorber at 77 K   During the design of fixed bed adsorbers, it is vital to understand the
dynamic adsorption properties of the system. Because temperature is one of the
most important factors affecting adsorbent performance, such that the dynamic
adsorption coefficients tend to increase as the temperature decreases, the
dynamic adsorption characteristics of Xe on a fixed bed adsorber at 77 K were
studied in the present work to minimize the volume of fixed bed adsorber,
employing a variety of adsorbents under different operational conditions. The
results show that the adsorption performance of carbon molecular sieve is
superior to that of activated carbon. And both operational conditions and the
presence of gaseous impurities were found to affect adsorption properties.

10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex