1) Moralisation 2) Moralizing 3) Philosophizing 4) The act of making moral 1) Moralisation 2) Moralizing 3) Preachification 
• (n.) The act of moralizing; moral reflections or discourse. • (n.) Explanation in a moral sense.
Mor`al·i·za'tion noun [ Confer French moralisation .] 1. The act of moralizing; moral reflections or discourse. 2. Explanation in a moral sense. T. Warton. 
[n] - the act of making moral (or more moral)
moralisation noun the act of making moral (or more moral); `for years she worked toward the moralization of English literature`