77:. After the digestion with acid most of the zinc and zinc oxide is dissolved from the catalyst, while after digestion with base it still contains considerable amounts of zinc and zinc oxide. It is also possible to precipitate the nickel using
69:. There are different designations for differently prepared Urushibara nickel catalysts. The most common is U-Ni-A and U-Ni-B. U-Ni-A is prepared by digesting the precipitated nickel with an acid such as
375:"Reduction of Organic Compounds with Urushibara Catalysts under High Pressure. X. Hydrogenation of 2-Butyne-1,4-diol to cis-2-Butene-1,4-diol with Various Urushibara Catalysts"
342:"Reduction of Organic Compounds with Urushibara Catalysts under High Pressure. VII. Feature of Various Urushibara Catalysts as Revealed in the Reduction of Benzophenone"
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120:. Urushibara iron is limited as a catalyst due to its relatively low activity toward most
53:
Metallic nickel is precipitated by treating a solution of a nickel salt with an excess of
286:(1st ed.). New York: Wiley-Interscience. pp. 19, 36, 94, 123, 166, 204–205.
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57:. This precipitated nickel contains relatively large amounts of zinc and
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Handbook of
Heterogeneous Catalytic Hydrogenation for Organic Synthesis
145:
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Sarko, Christopher R.; Dimare, Marcello (2001). "Urushibara Nickel".
129:
125:
94:
23:
124:, however; it does finds some use in the partial hydrogenation of
117:
307:
Urushibara, Yoshiyuki; Nishimura, Shigeo; Uehara, Hideo (1955).
98:
66:
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41:. For most hydrogenations, it performs comparably to W-7 grade
113:
where it serves as a superior catalyst for the production of
109:. As a hydrogenation catalyst, Urushibara cobalt is used for
101:-based catalysts have also been developed, They are termed
211:"Procedure for the Preparation of the New Nickel Catalyst"
61:. Then the catalyst is activated by digesting with either
73:. U-Ni-B is prepared by digesting with a base such as
144:in 1951, while doing research on the reduction of
442:New Hydrogenating Catalysts: Urushibara Catalysts
209:Urushibara, Yoshiyuki; Nishimura, Shigeo (1954).
33:. It is a heterogeneous catalyst, comparable to
140:The first of these catalysts were discovered by
244:Encyclopedia of Reagents for Organic Synthesis
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423:
412:Bulletin of the Chemical Society of Japan
408:"A New Method of Catalytic Hydrogenation"
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379:Bulletin of the Chemical Society of Japan
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346:Bulletin of the Chemical Society of Japan
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313:Bulletin of the Chemical Society of Japan
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215:Bulletin of the Chemical Society of Japan
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273:
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309:"A New Preparation of Catalytic Nickel"
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445:(1st ed.). Oakland, CA: Wiley.
37:. Urushibara nickel is however not
14:
406:Urushibara, Yoshiyuki (1952).
1:
499:
280:Nishimura, Shigeo (2001).
373:Taira, Shinichi (1962).
340:Taira, Shinichi (1961).
252:10.1002/047084289X.ru003
473:Hydrogenation catalysts
162:Nickel boride catalyst
16:Hydrogenation catalyst
439:Hata, Kazuo (1972).
187:Molybdenum disulfide
142:Yoshiyuki Urushibara
425:10.1246/bcsj.25.280
392:10.1246/bcsj.35.840
359:10.1246/bcsj.34.261
326:10.1246/bcsj.28.446
228:10.1246/bcsj.27.480
122:functional groups
111:nitrile reduction
103:Urushibara cobalt
20:Urushibara nickel
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182:Adams's catalyst
177:Lindlar catalyst
167:Nickel(II) oxide
75:sodium hydroxide
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107:Urushibara iron
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478:Nickel alloys
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172:Cobalt boride
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43:Raney nickel
35:Raney nickel
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483:Zinc alloys
71:acetic acid
49:Preparation
467:Categories
418:(4): 280.
319:(6): 446.
221:(7): 480.
193:References
89:Variations
59:zinc oxide
39:pyrophoric
150:estradiol
83:magnesium
79:aluminium
156:See also
31:catalyst
146:estrone
136:History
130:alkenes
126:alkynes
115:primary
26:-based
449:
290:
258:
118:amines
95:cobalt
24:nickel
97:- or
22:is a
447:ISBN
288:ISBN
256:ISBN
105:and
99:iron
93:The
67:acid
63:base
55:zinc
420:doi
387:doi
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321:doi
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148:to
128:to
81:or
65:or
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