SU587988A1 - Method of preparing a catalyst for ammonia synthesis - Google Patents

Description

The press in the form of tablets (mm) under a pressure of 2.5 at. The tablets are calcined at 900 ° C and 50 ml of an alcohol solution containing 0.12 g of KOH and dried at 100 ° C are passed through. The catalyst thus prepared is prepared. The following chemical composition (wt.%) 1.0 AGaOz, 0.5 CaO, 0.5 MoO ,, 0.1 K, 0, the rest of the nose FejOj. EXAMPLE 2. According to npHhfcpy 1, ready-to-use tablés from 97.7 g of FejOj, 1.0 g of AljOs, 1.2 g of CaC2O4, and 0.5 g of MoOj. Tablets are dried at 120 ° С, 50 ml of an alcohol solution containing 0.35 g KSSH and suivt at 100 ° C are impregnated in a) solution: thus the catalyst {has the following composition (weight%): 1.0 AljOji 0.5 CaO, 0.5 MoOj, 0.3 KjO, the rest FejOsВ table. 1 shows the content of LNH3 (vol.%) In the nitrogen-gel mixture on the pre-catalyst of the catalyst (equivalent to examples 1 and 2) compared with the precipitating catalyst. The following shows the crush strength of the catalyst tablets (mm). Condition test: .AT, W 15000 H - Sample12 Known Mechanical strength crush, kg / cm 50075050 When preparing catalysts by the proposed method, there is no waste water, recycling requirements. The catalysts obtained by this method have activity higher or equal to the activity of the precipitated catalyst. The mechanical durability of catalysts, npitfOTOBennyh on the proposed method, significantly exceeds the mechanical strength of the precipitating catalyst. Table 1

Chizobretenie formula

A method for preparing a catalyst for ammonia with ammonia by mixing compounds of aluminum and aluminum, into a mixture of molybdenum trioxide solution in ammonia water and calcium salt with a gradual drying of catalys aatopHdi MiaccH at 100-120 ° C, calcined, impregnated with hydrochloric acid hydroxyl hydroxide at a temperature of 100-120 ° C, calcined, impregnated with hydrochloric acid hydroxide hyacinth hydroxide at 100–120 ° C, calcined, impregnated with hydrochloric acid hydroxide hydroxides in 100–120 ° C, calcined, impregnated with hydrochloric acid hydroxide hydroxides in 100–120 ° C, calcined, impregnated with hydrochloric acid hydroxide hyacinthium hydroxide at 100–120 ° C, calcined, impregnated with hydrochloric acid hydroxide hydroxides and hydrochloric acid at a temperature of 100–120 ° C, calcined, impregnated with pacTBtqjOM hydrohydroxy hydroxy acid hydroxides, and dried hydrosaccharides. and and with the fact that, in order to exclude

sewage and obtaining a catalyst with higher mechanical strength, their oxides are taken as co-dated iron and aluminum, calcium is a calcium oxalate and calcination at 900-1200 ° C as calcium salt.

Sources of information taken into consideration at the examination:

1. Authors certificate of the USSR .№ 230098, M. class. B 01 3 37/08, 1967.

2. USSR author's certificate number 453864, M. -kl. On 01 J 11/22, 1973.