Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Albite feldspar dissolution kinetics as a function of the Gibbs free
  energy at high pCO_2   We are currently measuring the dissolution kinetics of albite feldspar at 100
deg C in the presence of high levels of dissolved CO_2 (pCO_2 = 9 MPa) as a
function of the saturation state of the feldspar (Gibbs free energy of
reaction, \Delta G). The experiments are conducted using a flow through
reactor, thereby allowing the dissolution reactions to occur at a fixed pH and
at constant, but variable saturation states. Preliminary results indicate that
at far-from-equilibrium conditions, the dissolution kinetics of albite are
defined by a rate plateau, with R \approx 5.0 x 10^{-10} mol m^{-2} s^{-1} at
-70 < \Delta G < -40 kJ mol^{-1}. At \Delta G > -40 kJ mol^{-1}, the rates
decrease sharply, revealing a strong inverse relation between the dissolution
rate and free energy. Based on the experiments carried out to date, the
dissolution rate-free energy data correspond to a highly non-linear and
sigmoidal relation, in accord with recent studies.

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The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
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The categories of this paper are: stat
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio