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  <xs:element id="apd_JazanGasProjectCompanyMember" abstract="true" name="JazanGasProjectCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="apd_RevenueFromContractWithCustomerSalesContractTerm" abstract="false" name="RevenueFromContractWithCustomerSalesContractTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="apd_ShareBasedPaymentArrangementExerciseOfOptionTaxBenefitComponentOfExcessTaxBenefit" abstract="false" name="ShareBasedPaymentArrangementExerciseOfOptionTaxBenefitComponentOfExcessTaxBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="apd_DefinedBenefitPlanPlanAssetsGeographicRegionPercentToTotalInternationalPlanAssets" abstract="false" name="DefinedBenefitPlanPlanAssetsGeographicRegionPercentToTotalInternationalPlanAssets" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
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  <xs:element id="apd_ObligationEquityContributionsShareOfAdvancesByJointVentureBridgeLoanMember" abstract="true" name="ObligationEquityContributionsShareOfAdvancesByJointVentureBridgeLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="apd_OtherForeignMember" abstract="true" name="OtherForeignMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_CustomerStationsMember" abstract="true" name="CustomerStationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_INOXAirProductsPrivateLimitedMember" abstract="true" name="INOXAirProductsPrivateLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_AramcoMember" abstract="true" name="AramcoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="apd_TaxAuthoritySouthKoreaMember" abstract="true" name="TaxAuthoritySouthKoreaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="apd_OnsiteMember" abstract="true" name="OnsiteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="apd_GuaranteeObligationsByNameDomain" abstract="true" name="GuaranteeObligationsByNameDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_NaturalGasToSyngasProcessingFacilityMember" abstract="true" name="NaturalGasToSyngasProcessingFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="apd_RestructuringChargesAttributableToParentAfterTax" abstract="false" name="RestructuringChargesAttributableToParentAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="apd_UncertainTaxPositionsStatuteOfLimitationsOtherReservesMember" abstract="true" name="UncertainTaxPositionsStatuteOfLimitationsOtherReservesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_RatioOfTotalDebtToCapitalizationDebtCovenant" abstract="false" name="RatioOfTotalDebtToCapitalizationDebtCovenant" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="apd_EffectiveIncomeTaxRateReconciliationTaxCreditsNetOfRepatriationOfForeignEarnings" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxCreditsNetOfRepatriationOfForeignEarnings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
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  <xs:element id="apd_IncomeTaxesLineItems" abstract="true" name="IncomeTaxesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="apd_InfraGroupMember" abstract="true" name="InfraGroupMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_VariableRateIndustrialRevenueBondsThreePointFiveFivePercentMember" abstract="true" name="VariableRateIndustrialRevenueBondsThreePointFiveFivePercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_ScheduleOfShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsValuationAssumptionsTableTextBlock" abstract="false" name="ScheduleOfShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsValuationAssumptionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
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  <xs:element id="apd_NetGainLossOnExchangeOfEquityAffiliateInvestments" abstract="false" name="NetGainLossOnExchangeOfEquityAffiliateInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="apd_CreditFacilitiesForeignSubsidiariesMember" abstract="true" name="CreditFacilitiesForeignSubsidiariesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
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  <xs:element id="apd_EnergyFromWasteBusinessMember" abstract="true" name="EnergyFromWasteBusinessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_UnrecognizedTaxBenefitsReductionResultingFromChangesToIncomeTaxRates" abstract="false" name="UnrecognizedTaxBenefitsReductionResultingFromChangesToIncomeTaxRates" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="apd_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPayOutsInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPayOutsInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
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  <xs:element id="apd_EquityMethodInvestmentOwnershipPercentageAttributableToNoncontrollingPartner" abstract="false" name="EquityMethodInvestmentOwnershipPercentageAttributableToNoncontrollingPartner" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
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  <xs:element id="apd_OtherChargesFromBusinessAndAssetActionsMember" abstract="true" name="OtherChargesFromBusinessAndAssetActionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="apd_ScheduleOfComponentsRecognizedInAccumulatedOtherComprehensiveIncomeOnPretaxBasisTableTextBlock" abstract="false" name="ScheduleOfComponentsRecognizedInAccumulatedOtherComprehensiveIncomeOnPretaxBasisTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="apd_SaleofEquipmentMember" abstract="true" name="SaleofEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_IndefiniteLivedIntangibleAssetsGross" abstract="false" name="IndefiniteLivedIntangibleAssetsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="apd_DerivativeAverageRateReceive" abstract="false" name="DerivativeAverageRateReceive" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="apd_NEOMGreenHydrogenCompanyMember" abstract="true" name="NEOMGreenHydrogenCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="apd_ShareBasedCompensationArrangementByAwardOtherThanOptionsPaidInPeriodTotalFairValue" abstract="false" name="ShareBasedCompensationArrangementByAwardOtherThanOptionsPaidInPeriodTotalFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="apd_ConsolidatedVariableInterestEntitiesDisclosureAbstract" abstract="true" name="ConsolidatedVariableInterestEntitiesDisclosureAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="apd_PasadenaTexasMemberMember" abstract="true" name="PasadenaTexasMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
</xs:schema>
