Described is an acoustic face comprising a solid polymer resin and coarse aggregates embedded within the solid polymer resin, and an acoustic panel assembly comprising at least one frame with a central opening in which a pair of the acoustic faces are mountable in opposed and spaced-apart relation to each other. The catalyst has a three-dimensional network structure and a cubic crystal structure sharing oxygen atoms, and has a SiAl ratio greater than 1, and includes an alkali metal, an alkaline earth metal and a water molecule of crystallization. Also disclosed are directional solidification processes. The illumination device further comprises an illumination assembly within the light tube that comprises a light source. The crude heavy oil is pumped to a vacuum evaporator through a heat exchanger for separating into wax and heavy oil for further processing. More particularly, the invention comprises the production of CF3C\u2261CCl and its selective reduction to cis-1-chloro-3,3,3-trifluoropropene.