Application of catalyst, and preparation method for disubstituted cyclohexane carboxylate with adjustable cis-trans ratio
A technology of cyclohexane carboxylate and di-substitution, applied in the field of preparation of di-substituted cyclohexane carboxylate
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] Weigh 0.3298g Pd(NO 3 ) 2 (Pd content 15.16wt%), add 6.5g deionized water, add 4.95g Al after it is completely dissolved 2 O 3 The carrier is stirred uniformly, immersed in an equal volume at 25°C for 12 hours, dried at 95°C and calcined at 400°C for 4 hours to obtain a catalyst precursor. Put the catalyst precursor in 10% H 2 / N 2 (Volume fraction) Activated at 300℃ for 4h in the atmosphere, then 1wt% Pd-Al is obtained 2 O 3 Finished catalyst.
[0028] The hydrogenation reaction of diisobutyl phthalate was carried out in a fixed-bed reactor equipped with a stainless steel tube with an inner diameter of 10 mm. The reaction temperature was 120°C, the hydrogen pressure was 5.0 MPa, and H 2 / Ester molar ratio 125, reactant mass space velocity is 0.6h -1 , Sampling and analysis 24h after the start of the reaction (see figure 1 ), RT=22.2min corresponds to trans-diisobutyl 1,2-cyclohexanedicarboxylate, and RT=23.2min corresponds to cis-1,2-cyclohexanedicarboxylate diisobutyl, ob...
Embodiment 2
[0030] Weigh 1.6490g Pd(NO 3 ) 2 (Pd content 15.16wt%), add 6.2g deionized water, add 4.75g Al after it is completely dissolved 2 O 3 The carrier was stirred uniformly, immersed in an equal volume at 25°C for 12h, dried at 95°C and calcined at 400°C for 4h to obtain a catalyst precursor. Put the catalyst precursor in 10% H 2 / N 2 (Volume Fraction) Activated at 300℃ for 4h in the atmosphere, then 5wt% Pd-Al is obtained 2 O 3 Finished catalyst.
[0031] The hydrogenation reaction of diisobutyl phthalate was carried out in a fixed-bed reactor equipped with a stainless steel tube with an inner diameter of 10 mm. The reaction temperature was 120°C, the hydrogen pressure was 5.0 MPa, and H 2 / Ester molar ratio 125, reactant mass space velocity is 0.6h -1 , Sampling and analysis 24 hours after the start of the reaction, the reaction evaluation results obtained are shown in Table 1.
Embodiment 3
[0033] Weigh 3.2980g Pd(NO 3 ) 2 (Pd content 15.16wt%), add 5.9g deionized water, and add 4.50g Al after it is completely dissolved 2 O 3 The carrier was stirred uniformly, immersed in an equal volume at 25°C for 12h, dried at 95°C and calcined at 400°C for 4h to obtain a catalyst precursor. Put the catalyst precursor in 10% H 2 / N 2 (Volume fraction) Activated at 300℃ for 4h in the atmosphere, then 10wt% Pd-Al is obtained 2 O 3 Finished catalyst.
[0034] The hydrogenation reaction of diisobutyl phthalate was carried out in a fixed-bed reactor equipped with a stainless steel tube with an inner diameter of 10 mm. The reaction temperature was 120°C, the hydrogen pressure was 5.0 MPa, and H 2 / Ester molar ratio 125, reactant mass space velocity is 0.6h -1 , Sampling and analysis 24 hours after the start of the reaction, the reaction evaluation results obtained are shown in Table 1.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com