Related Questions

A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)
Effectiveness factor of a catalyst pellet is a measure of the __________ resistance.
B.E.T. method can be used to determine the __________ of a porous catalyst.
A catalyst is said to be a negative catalyst, ifit
For the hydrogenation of oils (i) __________ is commonly used as catalyst and (ii) __________ is a catalyst poison.
Which of the following is added in low carbon steels to prevent them from becoming porous?
Molecular seives are porous
Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
For preparation of porous bearings by powder metallurgy, preferred particle shape is