Методику приготовления 5% Rh/C помогите пожалуйста найти

[OrganicChemist]

Уважаемые коллеги. Доброго времени суток вам. Помогите пожалуйста отыскать метод приготовления 5% Rh/C. Заранее огромное спасибо всем.

[ahh]

Посмотрите вот в этих статейках, может найдете

Preparation and characterization of rhodium and palladium catalysts on carbon black
By Gonzalez Ayuso, T.; Martin, M. A.; Pajares, J. A.; Mendioroz, S.; Lopez Gonzalez, J. D.; Rodriguez Reinoso, F.
From Actas Simp. Iberoam. Catal., 9th (1984), 2, 1101-10. Language: Spanish, Database: CAPLUS
Impregnation of a Vulcan 3G support, with BET surface area 62 m2g-1, with Rh from an aq. soln. gave a catalyst with the desired active-phase content (0.66 wt. %). Although C6H6-EtOH 4:1 soln. gave better dispersion, the Rh content was <0.40 wt. %. The best results with Pd were 0.24 wt. % 0.37 dispersion, and 20 Å size obtained with Pd(NH3)42+ aq. soln.

Decomposition of precursors on preparation of rhodium/active carbon catalysts
By Daza, L.; Gonzalez Ayuso, T.; Mendioroz, S.; Pajares, J. A.
From Applied Catalysis (1985), 13(2), 295-304. Language: English, Database: CAPLUS
Several different media (neutral, acid, basic and org.), 2 temps. (room and 80°), and 2 different com. active carbons (Norit SX1 and CECA BGP) were used for prepn. of 1% Rh/active C catalysts, by the adsorption from soln. method, in order to study the influence of different precursors on the amt. of incorporated metal and its dispersion in the final product. Decompn. amt. of incorporated metal and its dispersion in the final product. Decompn. in a H stream of each precursor was studied by thermogravimetric (TG) anal., and the redn. performed at a convenient temp. chosen from the TG data. Depending on the media, redn. temps. between 130 and 270° were used and metallic dispersions > 0.65 obtained. Several clear conclusions were obtained about the relation between potential anchorage surface sites and media used.

Preparation of rhodium/active carbon catalysts by adsorption in organic media
By Daza, L.; Mendioroz, S.; Pajares, J. A.
From Carbon (1986), 24(1), 33-41. Language: English, Database: CAPLUS
An attempt is made to rationalize the prepn. of metal/activated C catalysts, taking into account the surface properties of the support. The texture and structure of 2 com. carbons, NORIT SX-1 and CECA BGP, and of a 3rd, C2 obtained from almond shell, were characterized fully. These data were used for choosing the optimum conditions for the active phase incorporation. A fairly good loading and dispersion of .simeq. 1% Rh on the supports were obtained by adsorption from soln., using Me2CO and 4:1 C6H6:EtOH as the suspension media. Some general considerations about the prepn. of metal/activated C catalysts are given.

[ahh]

Вот тут еще гляньте

rh-c.pdf

[ahh]

А вобще физера гляньте Fieser 1,982 / Fieser 3,326 / Fieser 4,418 / Fieser 6,503 / Fieser 11,40 / Fieser 12,426 / Fieser 12,40

[OrganicChemist]

Спасибо большое за ссылки.

[OrganicChemist]

Preparation and characterization of rhodium and palladium catalysts on carbon black
By Gonzalez Ayuso, T.; Martin, M. A.; Pajares, J. A.; Mendioroz, S.; Lopez Gonzalez, J. D.; Rodriguez Reinoso, F.
From Actas Simp. Iberoam. Catal., 9th (1984), 2, 1101-10. Language: Spanish

Где это можно найти, не подскажете? В остальных мутно очень написано (их смотрел ранее). Физер у меня только русский. В томе на "Р" только применение в гидрировании катализаторов Rh/C и Rh/Al₂O₃

[ahh]

Физера можно скачать с гигапедии,

Где можно найти эту статью, я не знаю. Разве что отправить запрос в off-line

[Upstream]

Shigeo Nishimura. Handbook of heterogeneous catalytic hydrogenation for organic synthesis. Wiley 2001.
см стр 38-40

[OrganicChemist]

Спасибо большое, коллега Книга хорошая, но получение данного катализатора там не нашел.

[Upstream]

Значит, мне померещилось при беглом просмотре.
Уж в одной из этих книг должна быть:

Код: Выделить всё

http://asterix.msp.univie.ac.at/.Chemistry%20eBooks%20Collection/Organometallics%20%26%20Catalysis/

В противном случае придётся погрузиться в глубь веков - см. ссылки в родиевом разделе вложенного файла. Если вдруг наткнётесь на эту вещь в электронном виде, непременно обнародуйте: A.B. Stiles. Catalyst Manufacture - Laboratory and Commercial Preparations, Marcel Dekker, New York, 1983.