The mechanisms for deactivation are diverse and, depending on the scale at which the process takes place, can be hindered in progression or even completely suppressed at various intervention points with suitable measures. On the microscale, for example, an improved stability of the catalysts can be achieved through intelligent material design . On the mesoscale -the scale of formulated and moulded catalyst particles -the (deactivation) mechanisms can be intervened by the choice of the catalyst particle size and shape avoiding diffusion induced deactivation , but also by using suitable binders or support materials during the production of the particles . On the macro resp. reactor scale, suitable operating conditions and feed conditioning play a decisive role, which can be tackled by suitable measures . For instance, upstream gas purification can mitigate possible catalyst poisoning by a reduction of the amount of impurities in the feed gas. If the deactivation is unavoidable, advanced techniques like a control concept or a dynamic operation for the reactors can reverse deactivation processes .