Synthesis
Boron nitride has not been found in nature and therefore is produced synthetically. The most common raw materials for BN synthesis, boric acid and boron trioxide, are produced on industrial scales by treating the minerals borax and colemanite with sulfuric acid or hydrochloric acid:
- Na2B4O7·10H2O (borax) + H2SO4 → 4 H3BO3 (boric acid) + Na2SO4 + 5 H2O
Boron trioxide is obtained by heating boric acid:
- 2 H3BO3 → B2O3 + 3 H2O
Read more about this topic: Boron Nitride
Famous quotes containing the word synthesis:
“It is in this impossibility of attaining to a synthesis of the inner life and the outward that the inferiority of the biographer to the novelist lies. The biographer quite clearly sees Peel, say, seated on his bench while his opponents overwhelm him with perhaps undeserved censure. He sees him motionless, miserable, his head bent on his breast. He asks himself: “What is he thinking?” and he knows nothing.”
—Andre Maurois (1885–1967)
“In order to begin an analysis, there must already be a synthesis present in the mind.”
—Johan Huizinga (1872–1945)
“It is not easy to construct by mere scientific synthesis a foolproof system which will lead our children in a desired direction and avoid an undesirable one. Obviously, good can come only from a continuing interplay between that which we, as students, are gradually learning and that which we believe in, as people.”
—Erik H. Erikson (20th century)