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1.
Front Psychol ; 14: 1294224, 2023.
Article in English | MEDLINE | ID: mdl-38173856

ABSTRACT

Introduction: Adversity can bring stress and challenges to an individual's life, but many people who experience adversity also have positive changes. The formative mechanisms of individual adversarial growth have received widespread attention. Methods: A two-wave survey of 421 Chinese employees who experienced adversity during the COVID-19 epidemic was used to examine the influence mechanism of organizational compassion on adversarial growth and the moderating effect of job control. Results: Through correlation analysis, hierarchical regression, and bootstrap test on the cross-sectional data, the study has verified organizational compassion, work passion, self-worth, and adversarial growth form a chain mediating relation. Job control negatively moderates the indirect effect of organizational compassion on adversarial growth through work passion and self-worth, that is, the positive effect of organizational compassion on employee adversarial growth through work passion and self-worth is more pronounced under lower job control. Discussion: Organizational compassion can increase employee adversarial growth by enhancing their work passion and self-worth. Organizations should also pay more attention to those employees with lower job control who are in adversity, they are more likely to benefit from the organization's care and compassion.

2.
RSC Adv ; 12(51): 33276-33283, 2022 Nov 15.
Article in English | MEDLINE | ID: mdl-36425210

ABSTRACT

In this study, a series of mesoporous acidic polymeric ionic liquids were successfully synthesized and characterized to explore their structures and properties. Examination of catalytic performance using cyclohexanone oxime's maximum conversion were investigated, and the Box-Behnken design was used to achieve the highest hydrolysis conversion. Excellent catalytic activity, structural stability, and an easy recovery feature were all displayed by the Poly(VBS-DVB)HSO4 catalyst. Additionally, a possible reaction pathway involving hydrogen protons was proposed for the present hydrolysis. Moreover, a series of ketoximes were also examined including acetone oxime, butanone oxime, cyclopentanone oxime and acetophenone oxime over Poly(VBS-DVB)HSO4 catalyst. The conversion of ketoxime was not less than 80.44%, and the results also demonstrated excellent catalytic performance. Synthesis of mesoporous acidic polymeric ionic catalysts with good properties would be very important for their applications.

3.
RSC Adv ; 11(3): 1736-1742, 2021 Jan 04.
Article in English | MEDLINE | ID: mdl-35424133

ABSTRACT

In the direct synthesis of 2-propylheptanol (2-PH) from n-valeraldehyde, a second-metal oxide component Co3O4 was introduced into NiO/Nb2O5-TiO2 catalyst to assist in the reduction of NiO. In order to optimize the catalytic performance of NiO-Co3O4/Nb2O5-TiO2 catalyst, the effects of the Ni/Co mass ratio and NiO-Co3O4 loading were investigated. A series of NiO-Co3O4/Nb2O5-TiO2 catalysts with different Ni/Co mass ratios were prepared by the co-precipitation method and their catalytic performances were evaluated. The result showed that NiO-Co3O4/Nb2O5-TiO2 with a Ni/Co mass ratio of 8/3 demonstrated the best catalytic performance because the number of d-band holes in this catalyst was nearly equal to the number of electrons transferred in hydrogenation reaction. Subsequently, the NiO-Co3O4/Nb2O5-TiO2 catalysts with different Ni/Co mass ratios were characterized by XRD and XPS and the results indicated that both an interaction of Ni with Co and formation of a Ni-Co alloy were the main reasons for the reduction of NiO-Co3O4/Nb2O5-TiO2 catalyst in the reaction process. A higher NiO-Co3O4 loading could increase the catalytic activity but too high a loading resulted in incomplete reduction of NiO-Co3O4 in the reaction process. Thus the NiO-Co3O4/Nb2O5-TiO2 catalyst with a Ni/Co mass ratio of 8/3 and a NiO-Co3O4 loading of 14 wt% showed the best catalytic performance; a 2-PH selectivity of 80.4% was achieved with complete conversion of n-valeraldehyde. Furthermore, the NiO-Co3O4/Nb2O5-TiO2 catalyst showed good stability. This was ascribed to the interaction of Ni with Co, the formation of the Ni-Co alloy and further reservation of both in the process of reuse.

4.
RSC Adv ; 10(47): 28100-28105, 2020 Jul 27.
Article in English | MEDLINE | ID: mdl-35519136

ABSTRACT

A novel silica-immobilized nickel and acid ionic liquid (Ni-IL/SiO2) catalyst was prepared by combining a bonding procedure with an impregnation operation and was characterized by means of X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) techniques. Its catalytic performance was evaluated for the one-pot synthesis of 2-propylheptanol (2-PH) via a sequential n-valeraldehyde self-condensation and hydrogenation reaction. As a result, Ni-IL/SiO2 showed an excellent catalytic activity for the one-pot synthesis of 2-PH, affording a 2-PH selectivity of 75.4% at a n-valeraldehyde conversion of 100% and the sum of 2-PH and pentanol selectivity reached 98.6% under the suitable reaction conditions.

5.
RSC Adv ; 9(31): 17631-17638, 2019 Jun 04.
Article in English | MEDLINE | ID: mdl-35520601

ABSTRACT

Preparation of benzonitrile from benzaldehyde and hydroxylamine hydrochloride is one of the most advantageous approaches. Nevertheless, it suffers from various constraints such as longer reaction time, corrosion and recovery of hydrochloric acid, the use of metal salt catalysts and their separation. For these reasons, a novel green benzonitrile synthetic route was proposed with ionic liquid as the recycling agent in this study. The results indicated that hydroxylamine 1-sulfobutyl pyridine hydrosulfate salt ((NH2OH)2·[HSO3-b-Py]·HSO4) was an expert alternative to hydroxylamine hydrochloride. Meanwhile, the ionic liquid [HSO3-b-Py]·HSO4 exhibited the multiple roles of co-solvent, catalysis and phase separation, thus the use of metal salt catalyst was eliminated, and no additional catalyst was needed. Hence, the separation process was greatly simplified. When the molar ratio of benzaldehyde to (NH2OH)2·[HSO3-b-Py]·HSO4 was 1 : 1.5, the volume ratio of paraxylene to [HSO3-b-Py]·HSO4 was 2 : 1, the benzaldehyde conversion and benzonitrile yield were both 100% at 120 °C in 2 h. Even better, the ionic liquid could be recovered easily by phase separation, and recycled directly after reaction. Additionally, this novel route is applicable to the green synthesis of a variety of aromatic, heteroaromatic and aliphatic nitriles with excellent yields.

6.
Chem Commun (Camb) ; 51(10): 1930-2, 2015 Feb 04.
Article in English | MEDLINE | ID: mdl-25531208

ABSTRACT

A SO3H-functionalized ionic liquid was used as an alternative to conventional inorganic acids in hydroxylamine stabilization, leading to the formation of a novel hydroxylamine ionic liquid salt that exhibits improved thermal stability and reactivity in the one-step, solvent-free synthesis of caprolactam in comparison with hydroxylamine hydrochloride and hydroxylamine sulfate.

7.
Appl Biochem Biotechnol ; 168(6): 1635-42, 2012 Nov.
Article in English | MEDLINE | ID: mdl-22965306

ABSTRACT

The adsorption of glucose oxidase (GOD) on graphene oxide (GO) nanoparticles without using any cross-linking reagents and/or additional surface modification was studied. Results of Fourier-transform infrared and ultraviolet-visible absorption spectroscopy confirmed that GOD was successfully immobilized on GO surface. The obtained immobilized GOD showed a wide range of pH stability and improved thermal and storage stability. In addition, GO exhibited good biocompatibility, which has potential advantages for biomedical and clinical diagnosis applications.


Subject(s)
Aspergillus niger/enzymology , Fungal Proteins/chemistry , Glucose Oxidase/chemistry , Graphite/chemistry , Oxides/chemistry , Enzyme Stability , Enzymes, Immobilized/chemistry , Kinetics , Nanoparticles/chemistry
8.
Guang Pu Xue Yu Guang Pu Fen Xi ; 30(9): 2460-3, 2010 Sep.
Article in Chinese | MEDLINE | ID: mdl-21105418

ABSTRACT

Bis(4-butoxycarbonylaminocyclohexyl) methane (H12 MDU) was prepared using dicyclohexylmethane-4,4'-diisocyanate and 1-butanol as raw materials and two solid products A and B were obtained. The structures of the two solid products were characterized separately by melting point measurement, infrared spectroscopy, elemental analysis, NMR spectrum analysis and mass spectrum analysis. The results show that both A and B are the target products H12 MDU. The solid A is trans-trans-H12 MDU while the solid B is a mixture including trans-trans-Hiz MDU and at least one of cis-trans-H12MDU and cis-cis-H12 MDU.

9.
Guang Pu Xue Yu Guang Pu Fen Xi ; 29(2): 331-5, 2009 Feb.
Article in Chinese | MEDLINE | ID: mdl-19445197

ABSTRACT

The methoxycarbonylation mechanism of synthesizing 2,4-toluene dicarbamate from 2,4-toluene diamine and dimethyl carbonate catalyzed by anhydrous zinc acetate was investigated by Fourier transform infrared spectroscopy. The result shows that the new coordination complex was formed by oxygen atom of dimethyl carbonate's carbonyl group attaching to zinc atom of anhydrous zinc acetate to form the Zn-O coordination bond, and the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand. Simultaneously, dimethyl carbonate's carbonyl group was activated. 2,4-toluene diamine was a nucleophilic reagent, and it's amidos attacked the activated carbon of dimethyl carbonate's carbonyl group in the new coordination complex to produce the methoxycarbonylation compound 2,4-toluene dicarbamate, then the Zn-O coordination bond in the new coordination complex was broken. At the same time, the anhydrous zinc acetate returned to a bidentate ligand.

10.
Guang Pu Xue Yu Guang Pu Fen Xi ; 25(5): 730-3, 2005 May.
Article in Chinese | MEDLINE | ID: mdl-16128075

ABSTRACT

A novel porous coordination polymer [Nd2 (C6H8O4)3 (H2O)2]n x n (4,4'-bpy) was synthesized by hydrothermal synthesis reaction of hexyl acid, 4,4'-bpy with NdCl3 x XH2O. The structure was characterized by elemental analysis, thermal gravimetric analysis, IR spectroscopy, and X-ray single crystal analysis. The crystal data are of an orthorhombic crystal system, Pbcn space group. Crystallographic data are: a = 2.201 2 nm(6), b = 0.777 8 nm(2), c = 1.972 4 nm(5), alpha = beta = gamma = 90 degrees, V = 337.70 nm(15)3, Z = 4, D(c) = 1.796 g x cm(-3), mu = 3.108 mm(-1), F(000) = 1 800, R = 0.043 0 and wR2 = 0.056 0. X-ray analysis reveals that three-dimensional porous nets were formed between Nd3+ and Nd3+ by carboxyl of hexyl acid.


Subject(s)
Neodymium/chemistry , Organometallic Compounds/chemistry , Polymers/chemistry , Polymers/chemical synthesis , Crystallization , Crystallography, X-Ray , Models, Molecular , Molecular Structure , Porosity , Spectrophotometry, Infrared , Thermogravimetry
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