Reaction homogeneous degradation

Early theoretical work, carried out on cellulose and starches, was concerned with the effects of chain scission on moleculeir weight. The acid-catalyzed homogeneous degradation of cellulose is a random degradation of this type. These are step reactions, and various theoretical processes were put forward to describe them (24 27). 

The study of enzymes is important because every syndietic and degradation reaction in all living cells is controlled and catalyzed by specific enzymes. Many of these reactions are the soluble enzyme-soluble substrate type and are homogeneous in the liquid phase. 

The predominant activity in the study of enzymes has been in relation to biological reactions. This is because specific enzymes have bodi controlled and catalyzed syndietic and degradation reactions in all living cells. Many of diese reactions are homogeneous in the liquid phase (i.e., type 3 reactions). 

C to prevent degradation of the catalyst complexes. Therefore, strongly endothermic reactions cannot be carried out with homogeneous catalysts. 

Esterification is the first step in PET synthesis but also occurs during melt-phase polycondensation, SSP, and extrusion processes due to the significant formation of carboxyl end groups by polymer degradation. As an equilibrium reaction, esterification is always accompanied by the reverse reaction being hydrolysis. In industrial esterification reactors, esterification and transesterification proceed simultaneously, and thus a complex reaction scheme with parallel and serial equilibrium reactions has to be considered. In addition, the esterification process involves three phases, i.e. solid TPA, a homogeneous liquid phase and the gas phase. The respective phase equilibria will be discussed below in Section 3.1. 

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