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A system formed by a crowded environment of catalytic obstacles and complexoscillatory chemical reactions is inquired. The obstacles are static spheres ofequal radius, which are placed in a random way. The chemical reactions arecarried out in a fluid following a multiparticle collision scheme where themass, energy and local momentum are conserved. Firstly, it is explored how thepresence of catalytic obstacles changes the oscillatory dynamics from a limitcycle to a fix point reached after a damping. The damping is characterized bythe decay constant, which grows linearly with volume fraction for low values ofthe mesoscale collision time and the catalytic reaction constant. Additionally,it is shown that, although the distribution of obstacles is random, there areregions in the system where the catalytic chemical reactions are favored. Thisentails that in average the radius of gyrations of catalytic chemical reactiondoes not match with the radius of gyration of obstacles, that is, clusters ofreactions emerge on the catalytic obstacles, even when the diffusion issignificant.

Damping and clustering into crowded environment of catalytic chemical oscillators