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Volumetric Determination of petroleum cracking catalyst in the boron oxide

0) catalysts for petroleum cracking analysis of chemical components in common in the petrochemical sector has been more systematic rules, but no reports on the determination of B. B, rock and mineral determination of mature l-, but not directly. The table of oil cracking catalyst into a primary component of A 【: 0 more than 7O, MoO about 15, PzO5 5. N0 of about 2,5, B about 003 ~ 2.64B to the determination of whether or spectrophotometric method with acid-base capacity, the interference of a large number of Al are the main elements of the separation in Canadian BaCOs method is simple and reliable. 1 sample decomposition with Na. O units of a mixed melting Li Na0H decomposition of sample. For both the sample decomposed completely. And less so by the loss of the crucible, melt by baking at 750C 5,8,10,15 mi13 pilot. Selected for 8min. A separate test 2BaCO3】【A . because there are a lot of floc of A1 (0H) precipitation, it is difficult sights BaC0, the remaining amount. Second. sample C0} if and when the deposits formed elements. more difficult to distinguish a product of the reaction is still not decomposed The BaCOs. Therefore, the separation process must be checked in the solution pH. 3 Weigh 0.4000g sample analysis steps crucible in sickle t plus Na: O21g, NaOH3g.750C high-temperature furnace melting 8rain, whisk the ball extraction, with HC [acidified solution brighter. dropwise 300g/LNaOH oxygen oxide solution and precipitation to occur,[link widoczny dla zalogowanych], then HCI (1-1) and to precipitate dissolved in the solution to boil,[link widoczny dla zalogowanych], add one spoonful of hot paste IMCO. stir,[link widoczny dla zalogowanych], add a little, do not take up CO bubbles, check the solution pH. boiled 2rain, 100m 【turn off the solution flask, diluted with water to the degrees. shake dry filter, absorbing serum 25 - 50ml in 150ml beaker .0 Zhao Zhizhuo women, engineers, and research things Rock and 174 plus 2 drops of methyl red with 0.1mo 【/ LHC [in and to the red, and over 6 to 8 drops of cooking in the electric heating board whisk 15 ~ 20rain,[link widoczny dla zalogowanych], the rapid cooling. Na0H standard solution and with appropriate changes to yellow, add l l0 drops of phenolphthalein indicator, mannitol 0.5g, with 0,02 mo [/ L or 0. A pair of standard solution titration mol/LNa0H to red. plus a little of mannitol, such as loss of red i Shaw, continue titration to the red. Repeat several times. until the red is not lost for the end i Shaw. 4 samples of the three samples of a car azomethine H method and the acid spectrophotometric analysis, were shown in Table 1. Table 1 Analysis of the results of the control (B203) / A Asia by a sample number! By increasing the sample volume. Strictly controlled conditions of scratch test. Parapet low standard solution {Pu given in degrees (c (NaOH) = OO1mol / L) and other means. Also get satisfactory results.

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