Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Humidity Effect on Diffusion and Structure of a Moisture-Swing CO2
  Sorbent   Ion hydrations are ubiquitous in natural and fundamental processes. A
quantitative analysis of a novel CO2 sorbent driven by ion hydrations was
presented by molecular dynamics (MD). We explored the humidity effect on the
diffusion and structure of ion hydrations in CO2 sorbent, as well as the
working mechanism of the moisture-swing CO2 sorbent. The discovery of the
diffusion coefficients of ions at different humidity levels can be applied to
design a new CO2 sorbent with superior performance. The molecular structure
analysis shows a higher precipitation rate of HCO3- ions than CO32- ions in a
dry surrounding, which leads to a more alkaline surrounding on CO2 sorbent that
may promote the absorption of CO2.

9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol