Preparation of pallatized asbestos

Preparation of pallatized asbestos

Pure short-fibre asbestos is washed with acetic acid and heated to red heat, then soaked in a concentrated, weakly acid solution of palladium chloride. Absorption is accelerated heating on the water-bath. Then the fibres are treated in the cold with 35-40 % formaldehyde solution (4.5-5 ml per grain of palladium). After cooling, 40-50% sodium hydroxide solution is slowly added (1.5 times by weight that of formaldehyde solution). The metal is precipitated in the cold, but the reaction is completed by warming on the water-bath. Then much water is added and the mass of asbestos is washed until as free as possible from salts and alkali; thereafter, the black asbestos fibres are placed in very dilute acetic acid, to remove the last traces of alkali. Finally they are filtered off under suction and washed until the washings are neutral, then dried for a short time in a drying oven. The black asbestos obtained in this way is a useful, very active catalyst for both hydrogenation and dehydrogenation.

N. D. Zelinsky, P. Borisoff, Ber. Deut. Chem. Ges., 57, 150 (1924)





InChI Key


Canonical SMILES


MeSH Synonyms


Depositor-Supplied Synonyms

PALLADIUM, Palladium on carbon, Palladium Black, 7440-05-3, paladio, palladium/carbon, Palladium element, Palladium, element, (107pd)palladium, (109pd)palladium, Palladex 600, Palladium on activated charcoal, palladium on charcoal, 46Pd, UNII-5TWQ1V240M, palladium on activated carbon, PD, CHEBI:33363, HSDB 6768, EINECS 231-115-6, Palladium on alumina, Precipitated palladium, Palladium on barium sulfate, PALLADIUM, 10% WT. % ON ACTIVATED CARBON, 53092-86-7, Palladium atomic absorption standard solution, Lindlar Catalyst, Pd on charcoal, Pd on carbon, palladium charcoal, palladium/charcoal, palladium /carbon, palladium/ carbon, palladium(0), Palladium compounds, palladium (0), palladium / carbon, palladium on-carbon, palladium-on carbon, palladium-on-carbon, palladium/char coal, palladiumon charcoal, palladium- on-carbon, paliadium-on-charcoal, palladium on-charcoal, palladium-on charcoal, palladium-on-charcoal, Palladium on car-bon, 17637-99-9, palladium- on-charcoal, Pd on activated carbon, PubChem21560, Escat(TM) 11, palladium -on- charcoal, palladium carbon catalyst, Pd on activated charcoal, PALLADIUM, SPONGE, e 105 rse/w, e 106 rob/d, Escat(TM) 103, palladium-activated carbon, e 101 ne/w, e 101 nn/d, e 101 nn/w, e 101 no/w, e 105 ca/w, e 105 ya/w, e 106 kr/d, e 106 nn/w, e 196 kp/d, e 196 nn/w, e 196 rb/d, e 196 rb/w, e 199 nn/w, Epitope ID:114072, palladium on charcoal paste, palladium/charcoal activated, AC1L2N3K, palladium, on active carbon, sulfided palladium on carbon, e 1002 nn/w, e 1097 ne/w, e 1506 ya/w, palladium on carbon, reduced, Palladium, Sponge 20 Mesh, e 101 n/d, e 101 n/w, e 101 o/d, e 101 o/w, e 101 r/d, e 101 r/w, e 105 b/d, e 105 o/w, e 105 r/d, e 105 r/w, e 105 y/w, e 106 b/w, e 106 o/w, e 106 r/w, e 106 u/w, e 196 r/d, e 196 r/w, palladium on carbon 10% dry, 75990_ALDRICH, 75991_ALDRICH, 75992_ALDRICH, 75993_ALDRICH, 76022_ALDRICH, Palladium on carbon 10% wet, palladium, on activated carbon, ACMC-2097l2, 203939_ALDRICH, 203998_ALDRICH, 205672_ALDRICH, 205680_ALDRICH, 205699_ALDRICH, 205702_ALDRICH, 205710_ALDRICH, 205729_ALDRICH, 205745_ALDRICH, 205753_ALDRICH, 205834_ALDRICH, 207349_ALDRICH, 227757_ALDRICH, 237515_ALDRICH, 267082_ALDRICH, 267112_ALDRICH, 267120_ALDRICH, 276707_ALDRICH, 277991_ALDRICH, 287474_ALDRICH, 326666_ALDRICH, 326690_ALDRICH, 330108_ALDRICH, 330116_ALDRICH, 330124_ALDRICH, 346985_ALDRICH, 346993_ALDRICH, 348643_ALDRICH, 348678_ALDRICH, 348694_ALDRICH, 373192_ALDRICH, 373206_ALDRICH, 407305_ALDRICH, 411450_ALDRICH, 440086_ALDRICH, 464651_ALDRICH, 520667_ALDRICH, 520675_ALDRICH, 520810_ALDRICH, 520829_ALDRICH, 520837_ALDRICH, 520845_ALDRICH, 520888_ALDRICH, 5TWQ1V240M, 643173_ALDRICH, 643181_ALDRICH, e 1002 r/w, e 1097 r/w, e 1529 r/w, 75990_FLUKA, 75991_FLUKA, 75992_FLUKA, 75993_FLUKA, 76002_FLUKA, 76022_FLUKA, CTK0H9525, HSDB 7330, 207349_FLUKA, KDLHZDBZIXYQEI-UHFFFAOYSA-N, MolPort-001-781-607, WXHIJDCHNDBCNY-UHFFFAOYSA-N, KST-1A2116, KST-1A2634, KST-1A2635, PALLADIUM, 5% ON CHARCOAL, 8978AF, ANW-14100, AR-1A0154, AR-1A0155, AR-1A0156, FC0827, IN2843, palladium on activated carbon, oxidic, AKOS005259069, palladium on activated carbon, reduced, palladium on activated carbon, sulfided, RL04824, RTR-024024, palladium on activated carbon, unreduced, PALLADIUM, WIRE,0.05″” DIAM, AN-19410, BP-11458, PALLADIUM, 10% ON SrCO3, AB1002191, KB-302467, LS-101165, palladium on activated peat carbon, reduced, palladium on activated wood carbon, reduced, RT-000086, FT-0083594, FT-0651504, P1490, P1491, P1701, P1702, P1703, P1785, palladium on activated wood carbon, unreduced, PALLADIUM, 10% ON CALCIUM CARBONATE, 3B4-2217, I14-31900, I14-114725, P123456000, Palladium 10% on activated carbon (wetted with ca. 53% water)

Removed Synonyms

null, palladium carbon, Palladium hydride, PALLADIUM ION, Pd/C, Palladium on activated alumina, CID23938, D010165, 12135-22-7, 178979-82-3, 20981-49-1, 20982-36-9

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