Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Molecular Traffic Control in Porous Nanoparticles   We investigate the conditions for reactivity enhancement of catalytic
processes in porous solids by use of molecular traffic control (MTC) as a
function of reaction rate and grain size. With dynamic Monte-Carlo simulations
and continuous-time random walk theory applied to the low concentration regime
we obtain a quantitative description of the MTC effect for a network of
intersecting single-file channels in a wide range of grain parameters and for
optimal external operating conditions. The efficiency ratio (compared with a
topologically and structurally similar reference system without MTC) is
inversely proportional to the grain diameter. However, for small grains MTC
leads to a reactivity enhancement of up to approximately 30% of the catalytic
conversion $A\to B$ even for short intersecting channels. This suggests that
MTC may significantly enhance the efficiency of a catalytic process for small
porous nanoparticles with a suitably chosen binary channel topology.

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The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
16
The categories of this paper are: stat
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
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The categories of this paper are: cs
8
The categories of this paper are: hep-ex