Showing papers by "University of Mons published in 1978"
TL;DR: In this article, the authors studied the condensation rate of HO-SiR2−(OSiR2)n−H (n=2, 3 or 4 and R=CH3) in xylene at 100 °C, catalyzed by dibutyltin diacetate, dilaurate and di-(2-ethyl)hexanoate, and the kinetic law was first order in each reactant and the reaction is accompanied by autocondensation of the silanol.
Abstract: The rate of condensation of H−SiR2−(OSiR2)n−H (n=2, 3 or 4 and R=CH3) and HO-SiRR′−(OSiRR′)3−OH (R′=C6H5) in xylene at 100 °C, catalyzed by dibutyltin diacetate, dilaurate and di-(2-ethyl)hexanoate, has been studied by infrared spectroscopy. The kinetic law is first order in each reactant and the reaction is accompanied by autocondensation of the silanol. The mecha nism involves complexation of the silanol with the catalyst, followed by the attack of a silane or silanol molecule.
21 citations
TL;DR: In this paper, a water vapour chemisorption on the surface of both solid phases is shown by thermoluminescence and by quadrupole mass spectrometry.
4 citations
TL;DR: In this article, the nonlinear temperature and velocity profiles of a two-dimensional Boussinesq fluid heated from below are shown to be the sum or terms with periodicity Λ cr n, with n = 1, 2, 3; their amplitudes are a function of ϵ = (R a − R cr a ) R cr n.
3 citations
TL;DR: In this paper, the instability of pipe Poiseuille flow in the framework of a nonlinear hydrodynamic stability theory was studied and the instability was shown to be a function of the number of pipes.
1 citations
01 Jan 1978
1 citations
01 Jan 1978
TL;DR: The subject of these lectures has, at the moment, very little relations with the problems of science and technology, energy, natural resources as discussed by the authors, and it rather belongs to the frontiers of physics or even to some region behind the frontier.
Abstract: The subject of these lectures has, at the moment, very little relations with the problems of science and technology, energy, natural resources. It rather belongs to the frontiers of physics or even to some region behind the frontiers. However many important technological progresses have come from the seemingly too theoretical or too academic research. This may justify a continuous interest in basic progresses, both in theory and in experiment.