The viewpoint of increasing effective utilization of hydrogen( EH) and efficient conversion of carbon (Ec) based on the reduction of coke yield was proposed. The values of EH and EC represent the effectiveness of chemical conversion in the catalytic cracking process and can be used for guiding the unit design and production.
methanol is the best solvent that is favorable for epoxidation of propylene. effective conversion of CHP is 49.5% and selectivity of PO is 98.7% when methanol is used as solvent.
Along with the increase of the application rate of manures and wheat straw, both the rapidly and slowly available K were increased , but the transformation rate of potassium did not decreased apparently.
The catalyst prepared exhibited a very good catalytic activity on the hydroxylation of phenol with H 2O 2 to dihydroxybenzene. The effect conversion of phenol reached 22.4% when phenol/H 2O 2(molar ratio) is 3 and the ratio of catechol and hydroquinone is about 1.4 in the products. The results didnt change when the reaction was magnified to 3 000 times.
The process in which phonons participate only at the photon absorption stage leads to efficient conversion of the SR from a wide spectral line into a narrow line, determined by the width of the M?ssbauer transition.
The possibility of the efficient conversion of the frequency of an optical soliton pulse in fibers with length-variable dispersion is physically analyzed and experimentally investigated.