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Table 6 Constraints for the factors and responses in numerical optimization

From: Liquid-phase hydrogenation of bio-refined succinic acid to 1,4-butanediol using bimetallic catalysts

Parameter Ultimate goal Experimental region
   Lower limit Upper limit
Catalyst Concentration In range 1 3
Temperature In range 180 250
Pressure In range 45 75
Yield of 1,4-BDO Maximize 0.26 5.03