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202194-95-4

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202194-95-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 202194-95-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,1,9 and 4 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 202194-95:
(8*2)+(7*0)+(6*2)+(5*1)+(4*9)+(3*4)+(2*9)+(1*5)=104
104 % 10 = 4
So 202194-95-4 is a valid CAS Registry Number.

202194-95-4Upstream product

202194-95-4Relevant articles and documents

Bifunctional metal/base catalysts (Pt/X) for the direct synthesis of MIBK from acetone

Mattos, Lisiane V.,Noronha, Fabio B.,Monteiro, Jose Luiz F.

, p. 166 - 176 (2002)

The synthesis of MIBK was studied over Pt supported on NaX and CsX zeolites. The activity increased as both the temperature and the H2/Ac ratio were increased. Temperature had also a beneficial effect on the selectivity to MIBK but the H2/Ac ratio had an opposite effect. Activities and selectivities were always higher for Pt/NaX than for Pt/CsX. For Pt/NaX, increasing the reduction temperature increased the activity but decreased the selectivity to MIBK. Both catalysts were quite stable and selectivities to MIBK of 70% were obtained over PtNaX at 613 K and H2/Ac = 0.5. The absence of both strong acidic and strong basic sites and a proper balance between metallic and basic sites are responsible for the behavior observed.

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